Installation

Mercier installation

It is important to read the installation instructions, maintenance guide and warranty document prior to installation. An installation that does not respect the instructions may void your warranty. For any questions about the installation process, please contact your authorized Mercier retailer, or contact Mercier’s technical department at 1-866-448-1785.

SOLID INSTALLATION GUIDE

Product description: 3/4 in Solid

Nailed installation ONLY

The solid wood boards including the finishing stages, such as sanding, polishing and applying the finish, are entirely factory performed under ideal conditions. These pre-varnished boards are ready to be used immediately following their installation. Each board consists entirely of 3/4 in thick solid wood; there is, therefore, no gluing or laminating required.

Recommended use
Installation Step 1
1st floor Yes
Ground floor Yes
Basement No

3/4 in solid products are not recommended for installation on a floor equipped with a radiant heating system.

Recommended material and tools

  • Vacuum or broom
  • Pneumatic or manual nailer for hardwood
    • "L" or "T" nails or "U" shaped staples
    • 15 to 17 ga
    • 1 1/2 in (38 mm) or longer
    • 8 in (20 cm) spacing
  • Levelling product or sander (if needed)
  • Level
  • Moisture meter for wood or concrete
  • 15 lb. felt or wax paper
  • Tape measure
  • Chalk line
  • Square
  • Mitre saw
  • Saw bench
  • Hammer tapping block
  • Handsaw
  • Drill and 3/32 in drill bit
  • Hammer, spiral finishing nails and pry bar
  • Mercier Touch up kit
  • Mercier maintenance kit.

This is not an exhaustive list of installation tools that may be required. Please note that Mercier wood flooring is not responsible for damage caused by tools or from the inappropriate use of materials.

Owner and installer responsibility

Before laying the floor, the installer and the owner must make sure that the installation site and subfloor comply with the conditions specified in this document. The installer and the buyer have the responsibility to inspect the wood boards prior to their installation. Mercier products meet stringent quality standards and comply with the standards in force in the wood flooring industry. These allow a rate of imperfection not exceeding 5% of the quantity of the purchased boards. This rate includes both the natural imperfections of the wood, manufacturing defects and selection of the grade.

If the installer doubts the grade selection, the manufacturing or finishing quality and cannot place the board in a less conspicuous place, nor eliminate imperfection, he/she should not install it. Once the boards are installed, this shall be considered as having been accepted by the installer and the owner even if the latter is absent at the time of installation.

According to the site and the type of installation1, control of the hardwood boards should provide 3 to 5% additional covering to compensate for the loss caused by the cuts. Mercier will only replace products with a defect rate exceeding the acceptable 5% rate (excluding the 3 to 5% cutting waste). Mercier cannot be held liable for improper installation of its products or poor judgment by the installer. Mercier assumes no labour or installation charges.

1 The angle of installation generates more significant cut losses reaching 7-9%.

Warranty

Structural lifetime limited warranty

35-year warranty on Mercier Generations Greenguard certified finish

The manufacturer - “Mercier wood flooring” - warrants to the original purchaser that the Mercier Generations Greenguard certified finish will resist complete wear2 and surface peeling for a period of:

  • 35 years from the purchase date on the Mercier Generations Greenguard certified finish, under normal residential conditions.
  • 10 years from the purchase date on the Pure Expression finish and Greenguard certified for normal residential wear.
  • 5 years from the purchase date on the Mercier Generations Greenguard certified finish, for light commercial use.

2 Wear must be obvious and represent at least 10% of the total area of the floor. Consult the Mercier warranty document for more information.

Preparation of the site

The installation of the wooden floor should be the last step in your project. Before the flooring boards are delivered, inspect the installation site to make sure that:

  • The concrete, plaster, paint as well as the subfloor are completely dry.
  • The building is kept within normal ambient conditions for at least one (1) week prior to floor laying, at a temperature of about 20° C (68° F) and a relative humidity of about 45% (35-55%).
  • The floor of the crawl space (if any) is completely coated with a 6 to 8 mil black polyethylene film.
Installation Step 2

The installer must check the humidity of the subfloor (plywood or OSB) at various locations using a moisture meter for wood. The moisture content of the subfloor must never exceed 12% and the gap between the subfloor and the wood boards must not exceed more than 4% of the rate of internal moisture of the boards which is from 6% to 9%. If the humidity of the subfloor or the gap between the floor and the subfloor is too high, heat, ventilate and dehumidify the site and delay the delivery and installation of the floor. (For 4 in wide boards and greater, the gap between the subfloor and the wood boards must not exceed more than 2% internal humidity of boards).

Once the ideal conditions have been obtained...

Bring the boxes of boards onto the installation site. Verify that the product is consistent in terms of species, grade, colour, size and quality. If all is compliant, let the wood acclimate for a minimum period of 48 hours prior to installation. Never store boxes of wood in an improper location such as a shed, an unheated garage or basement.

Preparation and correction of the subfloor

  • The subfloor must be structurally sound and securely fastened to the joists with floor screws to avoid any movement of the plywood panels, which could lead to cracks.
  • Recommended subfloors :
    • 3/4 in (19 mm) plywood panels or board-oriented panels (OSB) for spaced joists to at most 19,2 in (488 mm), center to center
    • Plywood panels of, at least, 5/8 in (16 mm) for spaced joists to at most 16 in (406 mm), center to center
  • The surface must be level. Rectify minor irregularities on the surface using a sander or a floor leveler (allow the leveler to completely dry before starting installation of the wood floor).
Installation Step 3
  • The subfloor must not present an elevation gain of more than 3/16 in (5 mm) over a distance of 6 ft (1,8 m) or 1/4 in (6 mm) over a distance of 10 feet (3 m).
  • The surface must be clean. Eliminate deposits of glue, staples and drive in the visible nails.
  • Remove debris and dust with a vacuum cleaner.
  • It is recommended to install 15 lb. felt paper or wax paper over the entire surface of the subfloor.
Installation Step 4

Recommended method to install boards

  • Select boards from at least 3 boxes at a time to ensure uniformity of installation.
  • Use a protective surface to place tools and the floor nailer.
  • Frequently vacuum during installation to remove sawdust and abrasives.
  • Install the boards perpendicularly (90°) or at an angle of 45° to the floor joists.
Installation Step 8 - a
Installation Step 8 - b

Installation

Start line
  • Use the chalk line to trace a guide line parallel to the starting wall at a distance from the wall that is the sum of the width of the boards and the 3/4 in expansion joint.
  • Use spacer blocks or shims between the floor boards and the wall to achieve the required expansion gap. The expansion joint is required to allow wood to react to changes in humidity.
Board installation
  • Install the first board along the starting line, the side of the tongue facing you, and groove facing the starting wall.
  • Be sure to be straight and square.
    Installation Step 12 - a
    Installation Step 12 - b
  • Always keep an expansion gap of 1/4 in (6 mm) at each end of the rows;
  • According to the nailer used, two rows or more will need to be nailed by hand, until you have enough space to use the nailer.
  • In the following rows, use a pneumatic nailer. The boards must be nailed at every 8 in (203 mm). Each board must be secured with at least 2 nails. Do not nail within 2 in (51 mm) of the ends to not cause the breaking of the tongue.
  • Important: the penetration angle of the fasteners must be 45 degrees.
  • Monitor the pressure of the compressor to make sure that the tongues are not damaged.
  • Before starting installation, check the nailer for the appropriate fit; practice handling the nailer on a scrap board.
  • Regularly clean and inspect the status of the shoe under the nailer so it does not damage the varnished surface.
  • Use of a hammer and tapping block may be necessary to engage the boards into each other. NEVER use the hammer or other hammering tool directly on the boards.
  • The last board of a row will probably be cut. The remaining portion (allow a minimum of 6 in [152 mm] length) will be used to start the next row.
  • The last rows of boards must be installed in the same way as the first.
    Installation Step 13 - a
  • It is possible that you need to cut the last row in the direction of the length to allow for an expansion joint of 3/4 in.
Cabin Pine collection

For best results, Mercier wood flooring recommends using staples for its Cabin Pine collection. Staples must be positioned at 6 in (152 mm) to 8 in (203 mm) with two staples on the first six inches. For greater stability, apply a urethane-based glue (e.g. MAPEI ECO 905) on the subfloor before nailing.

Apply glue to the subfloor by forming an “S in shaped pattern in the direction of the length of the strips.

Installation Step 13 - b

Warning!

Broken or split tongues can crack the floor.

Certain species of harder wood, such as exotic species, require greater attention to the settings of the pressure compressor.

Installation Step 14
Transition moldings

As part of your installation, you may have to install stair nosing, T-moldings, quarter-round and level reducers. These moldings are available in the same colours and species as your Mercier floor, and are available at your local authorized Mercier retailer. These moldings should be ordered at the same time as your hardwood floor.

Prior to installation the flooring, we recommend you select boards which combine well with moldings to not cause “breaks in in the appearance of the floor.

Warning!

It is suggested to pre-drill moldings to avoid cracking them when they are nailed.

If you install moldings, such as baseboards or quarter rounds, these should be affixed to the wall and not to the wood floor, to allow for the movement of the floor.

Always observe the space recommended for expansion joints.

Inspection, finishing and maintenance

Once the installation is complete, vacuum the floor and clean the surface using Mercier floor wood cleaner according to instructions. NEVER wash a hardwood floor with water.

You can hide small holes and marks left by the surface nails by using a Mercier touch-up kit referred to in technical bulletin No. 7.

Installation guide (solid)

ENGINEERED AND LOC INSTALLATION GUIDE

Product description

Engineered and LOC floors are specially designed to suit all situations, including basements, floors with radiant heating systems or direct installation on a concrete subfloor. Engineered floors (with the exception of Brazilian Cherry, Santos Mahogany and Hickory)1 comprise a solid wood surface glued on premier quality hardwood plywood. Mercier LOC floors consist of a solid wood surface glued to a central panel of high density fibreboard (HDF). Sanding and finishing of Engineered and LOC products are performed at the factory, under ideal conditions, in accordance with the same quality and precision requirements that have made Mercier’s ¾ in (19 mm) hardwood boards a synonym of excellence.

Recommended use

Installation Step 1
1st floor Yes
Ground floor Yes
Basement Yes

1 See technical bulletin 5 for the complete list of non-recommended products for radiant floors. www.mercier-wood-flooring.com

Recommended material and tools

  • Vacuum or broom
  • Miter-box saw
  • Tape measure
  • Chalk line
  • Square
  • Handsaw
  • Mercier Touch up kit
  • Hammer
  • Mercier maintenance kit
  • Table saw
  • Leveller or sander (if needed)
  • Reversing tongue (if needed)

This is not an exhaustive list of installation tools that could be required. Please note that Mercier wood flooring is not responsible for damage caused by tools or the inappropriate use of materials.

Glued installation
Installation Step 7

1/2 in (13 mm) and 3/4 in (19 mm) Engineered platforms only

  • Use a urethane-based, waterless adhesive. Recommended adhesives:
    • Finitech AD-532/AD-844 MS
    • Franklin 811
    • Bostik Best, EFA, BST
  • Trowel recommended by the manufacturer of the adhesive used
  • Blue adhesive tape, 3M brand or equivalent
  • Straight Edge and concrete nails (for support and to set the first row)
  • 100 to 150 lb. roller
  • Cleaner for urethane adhesive
  • Mercier ProteXsound DGD acoustic membrane adhesive
Nailed or stapled installation
Installation Step 8

1/2 in (13 mm) and 3/4 in (19 mm) Engineered platforms only

  • Stapler or nailer for hardwood (pneumatic or manual)
  • Drill and 3/32 in bit
  • Spiral finishing nails and nail punch
  • Floor screws
Staple "L" or "T" nails Min length
Engineered 1/2 in (13 mm) 18 ga 18-20 ga 1 1/4 in
Engineered 3/4 in (19 mm) 18 ga 16-18 ga 1 1/2 in
Floating installation

1/2 in (13 mm) and 3/4 in (19 mm) Engineered and Mercier LOC platforms2

Recommended adhesive and membrane:

  • PVA Type ll wood adhesive
  • ProteXsound LOC acoustic membrane (or an equivalent membrane with a maximum thickness of 1/8 in [3 mm]; ≥ 5 PSI, with 25 % compression)

2 Excluding 6 1/2 in widths

Installer and owner’s responsibility

Prior to laying the floor, the installer and the owner must make sure that the installation site and subfloor comply with the conditions specified in this document. The installer and the buyer have the responsibility to inspect the wood boards prior to their installation. Mercier products meet stringent quality standards and comply with the standards in force in the wood flooring industry. These allow a rate of imperfection not exceeding 5% of the quantity of the purchased boards. This rate includes both the natural imperfections of the wood as well as defects in manufacturing and selection of the grade.

If the installer doubts the grade selection, the manufacturing or finishing quality, and it cannot place the board in a less conspicuous place, or eliminate imperfection, he/she should not install it. Once the board is installed, it shall be considered as having been accepted by the installer and the owner, even if the latter is absent at the time of installation.

According to the site and the type of installation3, the order for the hardwood boards should provide for 3 to 5% additional recovery to compensate for the loss caused by the cuts. Mercier will only replace products with a defect rate exceeding the acceptable 5% (excluding the 3 to 5% cutting loss). Mercier cannot be held liable for improper installation of its products or poor judgment by the installer. Mercier assumes no labour or installation charges.

3 Angle installation generates more significant cut losses that could reach 7-9%.

Warranty

Limited lifetime structural warranty

35-year warranty on Mercier Generations Greenguard certified finish

The manufacturer Mercier Wood Flooring warrants to the original purchaser that the Greenguard certified Mercier Generations and Pure Expression finishes will resist full wear4 and surface peeling for a period of:

  • 35 years from the purchase date on the Mercier Generations Greenguard certified finish for normal residential wear.
  • 10 years from the purchase date for Pure Expression Greenguard Certified finish for normal residential wear.
  • 5 years from the purchase date on the Mercier Generations Greenguard certified finish for light commercial use.

4 Wear must be obvious and represent at least 10% of the total floor area. Consult the Mercier warranty document for more information.

Preparation of the site

Floor installation should be the last step in your project. Before the flooring boards are delivered, inspect the installation site to make sure that:

  • The concrete, plaster, paint and the subfloor are completely dry.
  • The building is kept within normal ambient conditions for at least one (1) week prior to floor laying, at a temperature of about 20 °C (68 °F), and a relative humidity between 35 and 55 % (LOC products) or 30 and 65 % (Engineered products).
Installation Step 9

The installer must check the humidity of the subfloor (plywood or OSB) at various locations using a moisture meter for wood. The moisture content of the subfloor must never exceed 12% and the gap between the subfloor and the wood boards must not exceed more than 4% of the rate of internal moisture of the boards. If the humidity of the subfloor or the gap is too high, heat, ventilate or dehumidify the site, and delay the delivery and installation of the floor.

If the subfloor is made of concrete slabs, plan a drying period of at least 30 days to test for a reliable humidity level. Measurements should not exceed 4.5% using a concrete moisture meter (Tramex Moisture Encounter). If there is moisture, test using calcium chloride. The moisture rate using the calcium chloride test must not exceed 3 lbs. per 1000 sq. ft. over 24 hours.

Preparation and correction of the subfloor

  • The surface of the subfloor must be free of any defect. If not, fill the cavities with levelling cement and sand irregularities.
  • The subfloor must be level, i.e., it must not present an elevation gain of more than 3/16 in (5 mm) over a distance of 10 feet (3 m).
  • The surface must be clean and free of contaminants such as grease, dust, oil, nails, staples or other materials.
  • For a glued installation on concrete slabs, make sure that the concrete is not low density (less than 3000 psi) or crumbly.
  • If applicable, make sure that ceramic tiles, acoustic membrane or any other former flooring firmly adheres to the subfloor (glue-down installation).
  • For nail-down installation, the subfloor must be securely attached to the joists to avoid panels moving and creaking. Use floor screws as needed.

Once the ideal conditions have been obtained, bring the boxes of boards onto the installation site. Verify that the product is consistent in terms of species, grade, colour, size and quality. If all is compliant, proceed with installation since the product requires no acclimatization. Please notify your dealer immediately if there is a problem.

Never store the hardwood boards in an unsuitable place, such as a shed, a garage or an unheated basement.

Recommended method to install boards

  • Select boards from at least three boxes at a time to ensure uniformity of installation.
  • Use a protective surface to place tools and the floor nailer.
  • Before starting installation, cut the bottom of the moldings around the doors to insert the hardwood boards.
  • Plan your project by making a sketch of the installation.
  • Determine the starting point of the installation.
  • Choose the direction of the hardwood boards. It is strongly recommended to install the strips at an angle of 45° or 90° to joists (does not apply to installation on concrete).
  • An expansion joint is required to allow wood to react to changes in humidity. Expansion joints will be hidden by the baseboard or quarter-round which must be nailed to the wall and not to the floor.

Glued installation

Installation Step 10 - a

Mercier’s Engineered 1/2 in (13 mm) and 3/4 in (19 mm) floors can be glued directly onto a subfloor that is either made of: concrete or wooden, ceramic tile, linoleum on the ground floor, upstairs and even in the basement.

Board installation
  • Using chalk line, draw a line parallel to the starting wall at a distance of 1/2 in (13 mm) more than the width of the boards (e.g.: 3 3/4 in [95 mm] for 3 1/4 in [83 mm] boards). The space between the wall and the starting point is the last section of floor that will be installed.
  • In advance, spread out 4 to 5 rows of assorted boards according to joints and colours.
  • From the starting point outward, apply the adhesive with your trowel at 45°. It is important to use the manufacturer’s recommended trowel to apply the correct amount of adhesive.
  • Nail the furring guides inside the work area along the line. The latter will serve as point of support points for installation of the first boards.
Installation Step 10 - b Installation Step 10 - c
  • Install the first board along the starting line so that the groove is towards you and the tongue is faced towards the starting wall. Always keep a ¼ in (6 mm) expansion gap at the end of rows.
  • Proceed in small sections so that the adhesive does not dry before the boards are installed.
  • Install the other boards in the row progressing from left to right.
  • The last row board will have to be cut. The scrap part will be used to start the next row (leave at least 6 in [152 mm] in length).
  • For the next rows, insert the tongue into the groove and lower the boards into the adjacent board and avoid touching the adhesive. A hammer block may be required to enter the tongue into the groove.
  • Apply adhesive blue tape onto each 5 or 6 rows to ensure that boards remain securely in place.
  • Use a 100 to 150 lb. (45.4 to 68 kg) roller to apply pressure on the fitted sections while the adhesive is still active (about 45 to 60 min.).
  • Repeat these steps for the entire floor.
  • For best results, stagger the end-joints 6 in to 8 in (203 mm to 152 mm) from the previous row and alternate the length of the boards.
  • Once the surface is completely covered, remove the guides and place the boards within the space left free at the start of the installation.

Important: During installation, immediately wipe off any adhesive from the surface of the flooring using adhesive cleaner.

Nailed installation

Nailed installation only applies with plywood subfloors or OSB panels.

Recommended subfloors :

  • 3/4 in (19 mm) plywood or OSB for joists spaced no more than 19.2 in (488 cm), center to center.
  • 5/8 in (16 mm) plywood (minimum) for joists spaced no more than 16 in (406 mm), center to center.
Installation Step 11
Using the nailer
  • Practice handling the floor nailer on a scrap board. Follow the manufacturer’s instructions and the safety instructions.
  • The shoe under the nailer should be cleaned regularly to ensure that it does not damage the varnish.
  • If you are using a pneumatic nailer, adjust the air pressure of the compressor and check it regularly thereafter.
Board installation
Installation Step 12
  • Using chalk line, draw a line parallel to the starting wall at a distance of 1/2 in (13 mm) more than the width of the boards (e.g.: 3 3/4 in [95 mm] for 3 1/4 in [83 mm] boards.)
  • Make sure you are straight and square from the outset.
  • Spread out 4 to 5 rows of boards according to joints and colour. Cut the strips with surface imperfections or place them in less visible places.
  • Install the first board along the line with the tongue towards you and the groove facing the starting wall. Always keep an expansion of 1/4’ in (6 mm) gap at the ends of rows.
  • The first row should be nailed manually. Drill holes at right angles on the top of boards as close as possible to the wall and secure with spiral finishing nails. Push in the head of nails with a nail punch. Then, drill holes at 45° into the tongue and insert spiral finishing nails.
  • The last board of the row will have to be cut. The scrap part will be used to start the next row (leave at least 6 in [152 mm] in length).
  • In the following rows, use the manual or pneumatic nailer. The boards should be nailed at 4 to 6 in (102 mm to 152 mm). Attach each board with at least two nails. Never nail less than 2 in (51 mm) from the end of the board to avoid the tongue splitting.
  • You may need a tapping block to engage the boards into each other.
  • For best results, stagger the end-joints 6 in (152 mm) to 8 in (203 mm) joints according to the previous row and alternate the length of boards.
  • The last boards should be installed in the same way as the first. It might be necessary to cut the last row length-wise to allow for the 1/2 in (13 mm) expansion joint.

Floating installation

Mercier’s 1/2 in (13 mm) and 3/4 (19 mm) Engineered flooring can be safely installed using a floating installation method if the following instructions are observed5.

Board installation
Installation Step 13

The floor must not be fixed to any surface. An expansion joint of a minimum of 1/2 in (13 mm) is required for all fixed elements. See table below.

Table 2
Expansion joint Max. width Max. length
1/2 in (13 mm) 26 ft. (8 m) 52 ft. (16 m)
3/4 in (19 mm) 40 ft. (12 m) 80 ft. (24 m)

  • Unroll the membrane over the entire surface of the subfloor in the opposite direction to the laying of the boards (consult the documentation included with the membrane installation).
  • The first rows of the floor are the most important. They must be straight and all joints must fit perfectly.
  • Select the longest boards so that the first row along the longest and straightest wall, is as straight as possible.
  • Install the first board along the line with the tongue towards you and the groove facing the starting wall. Always keep a 1/4 in (6 mm) expansion joint at the ends of rows. If the wall is not square, use wedges or shims between the hardwood boards and the wall to maintain the 1/2 in (13 mm) expansion joint.
  • Carefully apply a smooth, equal ribbon of glue at least 1/16 in (1.6 mm) wide, but not exceeding 1/8 in (3 mm) on the bottom of the groove only. Never apply glue onto the tongue and groove located at the end of the board.

NOTE: It is very important to apply the glue according to instructions. If the glue is poorly applied or of inadequate quantity, the joint could separate, while too much glue might unnecessarily complicate the task.

  • Install other boards of the row from left to right.
  • Immediately wipe off any excess glue with a dry cloth.
  • The last board of the row will have to be cut. The scrap part will be used to start the next row (leave at least 6 in [152 mm] in length).
  • Continue this way across the floor.
  • It may be necessary to use a hammer block to tap the boards so they fit securely.
  • For best results, stagger the end-joints 6 in (152 mm) to 8 in (203 mm) from the previous row and alternate the length of boards.
  • It is sometimes necessary to use 3M blue tape to hold the pieces in place while the glue dries.
  • Cut the boards in the last row at the correct width taking into account the 1/2 in (13 mm) expansion joint.

5 For best installation of the 6 ½ in wide products, it is recommended to first attach a fitting to the subfloor (glued or nailed/stapled) to reduce potential product deflection and creaking sounds caused by a floating installation.

Mercier LOC installation

Mercier LOC 1/2 in (13 mm) floors must not be installed using adhesive or mechanical attachments.

Board installation
Installation Step 14
  • The floor must not be fixed to any surface. An expansion joint of a minimum of 1/2 in (13 mm) is required for all fixed elements. See Table 2 on page 11.
  • Unroll the membrane over the entire surface of the subfloor in the direction opposite to the laying of the boards (consult the documentation included with the membrane installation).
  • The first rows of the floor are the most important. They must be straight and all joints must fit perfectly.
  • If the wall is not square, use wedges or shims between the hardwood boards and the wall to maintain the 1/2 in (13 mm) expansion joint.
  • Proceed from left to right when facing the starting wall. Install the first board along the line with its tongue facing you.
  • In the groove of the first board, insert the end of the second board, then lower it slowly. Continue installing the hardwood boards in this way for the entire length of the room making sure to leave a 1/4 in (6 mm) expansion joint at each end of the row.
  • The last board of the row will have to be cut. The scrap part will be used to start the next row (leave at least 6 in [152 mm] in length).
  • Insert the first board of the next row by making an angle from the previous row and by pushing forward and then downwards. When properly positioned, the LOC is very easy to assemble and requires no excessive force.
  • At the end of your third row, check your measurements to ensure that you are always parallel to the starting line.
  • Continue installing the hardwood boards in this way across the room, making sure that the ends of the adjacent board joints are staggered at least 6 in (152 mm).

Near the door jambs at the foot of the final wall or door, it will be necessary to remove the LOC mechanism from the two pieces with scissors or a knife. Place a drop of PVA Type II glue on the groove joint, and then with a vertical motion, place the last board.

Installation Step 15

In small areas such as landings or corridors (where the boards cross any section), it is recommended to join the 36 in boards or longer to reduce the risk of deflection.

Installation on floors with radiant heating

Mercier 1/2 in (13 mm), 3/4 in (19 mm) Engineered floors and Mercier LOC floors, with the exception of Brazilian Cherry, Santos Mahogany and Hickory, can be installed on a floor equipped with a radiant heating system on the ground floor, on the first floor or in the basement using the following instructions. You can access the technical bulletin 5 regarding radiant floors at www.mercier-wood-flooring.com

Precautions and recommendations:

Engineered floors must be fixed to the subfloor. For a floating installation on a floor equipped with a radiant system, use LOC products.

  • The system must be tested and operational a few weeks before floor installation.
  • Close the system prior to installation.
  • The floor surface that is heated with radiant heat must never exceed 80 °F (27 °C) during use.
  • Visible or exposed pipes must be covered with 3/8 in (10 mm) plywood or a layer of concrete to ensure uniform heat distribution.
  • When start-up or shutdown of the radiant heating system occurs at the beginning or at the end of seasons, gradually increase the temperature to limit the stress on the wood.

Specific circumstances

Transition moldings

As part of your installation, you may have to install stair nosing, T-moldings, quarter-round and level reducers. These moldings are available in the same colours and species as your Mercier floor, and are available at your local authorized Mercier retailer. These moldings should be ordered at the same time as your hardwood floor.

Prior to installation of the flooring, we recommend you select boards which combine well with moldings to not cause “breaks” in the appearance of the floor.

Attention!

It is suggested to pre-drill moldings to avoid cracking them when they are nailed.

If you install moldings, such as baseboards or quarter rounds, these should be affixed to the wall and not to the wood floor to allow for the movement of the floor.

Inspection, finishing and maintenance

Once installation is complete, vacuum the floor and clean the surface using Mercier floor wood cleaner according to instructions. NEVER wash a hardwood floor with water.

You can hide small holes and marks left by the surface nails by using a Mercier touch-up kit (for more information, see technical bulletin 7).

Installation guide (engineered and loc)
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