Application Instructions

31.5 mil Dek-Master® Vinyl Installation Instructions

READ ALL DIRECTIONS BEFORE BEGINNING

IMPORTANT: In inclement conditions, the plywood must be kept dry. Make a barrier by suspending a tarp at lease 24" from the deck surface. Hint: Use the roof fascia.

IMPORTANT:
Do not apply adhesive when the deck is hot to the touch from direct sunlight. Ducan does not warranty Dek-Master® on stairs.

It is not necessary to install Ducan Dek-Master® vinyl on pressure treated lumber. If it is a city requirement, there should be no more than 12% moisture content in the plywood.

Do not install Ducan Dek-Master® vinyl sheeting on pressure treated lumber. K-3 board, particle board and OSB are not recognized as suitable exterior sub-floor materials.

Installation
  1.

Carefully sweep off the deck surface and make sure it is free of all debris.

2.

Install galvanized metal cant strip at the house to deck interface or if running vinyl sheet up the wall, install 2" x 4" galvanized 90° metal flashing at the house to deck interface. This will act as an attachment transition between the deck surface and the house.

Note: It is always preferable to run the vinyl up the cant strip or flashing and under the siding and tar paper.

3.

Install galvanized metal flashing around perimeter to protect the edges of the plywood from moisture and to act as an attachment area for the vinyl. Install 1/4" away from the edge of the plywood using 1 1/4" galvanized ring nails, starting from the center and working your way out.

4.

Once cant strip and non-return drip flashing have been nailed to the deck, fill all joints and surface imperfections with Dek-Master® Dek-Patch joint filler and patching compound. Follow mixing instructions on the label. Fill all joints, screw indentations, surface imperfections and transition of cant strip and flashing to the deck surface. It is important when leveling out the flashing or cant strip edge that the Dek-Patch doesn't build up on the top surface. To avoid grinding or sanding, just before the Dek-Patch hardens scrape off excess and ridges with a trowel.

IMPORTANT: Do not allow the Dek-Patch to freeze for 24 hours. DO NOT ALLOW DEK-PATCH TO GET WET.

 

Your surface is now prepared and you are ready to install your waterproof Dek-Master® sheet vinyl. Do a review of the video, brochures and web site before proceeding.

Tip: To be sure the vinyl is square on the deck draw a chalk line in pencil so that when you unroll the vinyl you can be sure that the sheets are square on the deck surface.

5.

The pattern of the vinyl is directional. Lay each sheet in the same direction. Lay out the Dek-Master® vinyl to ensure the fewest possible seams. Start from the furthest point from the building and allow 1" to 2" of vinyl to to go over the flashing and 1" up and over the cant strip or 8" for up the wall. Adjust the vinyl sheet to ensure it is parallel to the wall and/or deck edge. Tack within 1" of upper edge to hold in place temporarily. The seam area will be glued with Ducan Overlap Cement thus putting a staple in this area is safe.

IMPORTANT: Colour variances from roll to roll are common. Ducan can not be responsible for any material applied from two separate rolls (lot numbers). Lot numbers can be found on a sticker inside the rolls of vinyl.

6.

Fold vinyl sheet back half its width (as shown at left) and first apply Dek-Master® Adhesive to the deck surface, secondly to the back side (fuzzy side) of the vinyl.

IMPORTANT: If using Dek-Master® SnapTac Fast Dry Adhesive please see installation instructions for 60 mil vinyl.

7.

Both surfaces must have a complete even coat of adhesive. Let the adhesive dry until tacky. Test the tack by placing your finger to the adhesive coated back side (fuzzy side) of the vinyl. Adhesive should be stringy between your finger & the back side of the vinyl.

8.

Push adhesive coated vinyl sheet down onto the deck surface by working from the middle point to the edge of the deck, then outwards to the ends.

IMPORTANT: Ducan recommends using your hands to smooth the vinyl down. If an air bubble forms in the vinyl, smooth it out with your palms to remove it. If you find you are acquiring air bubbles under the vinyl this could be from temperature or too much adhesive. Push the bubbles down. Most likely after a few days they will go down and stay down on their own.

Note: Use of a roller or rolling pin can cause stretching of the vinyl. Do Not Use.

WHEN TO APPLY: Temperatures between 15°C/60°F and 30°C/85°F are best for Dek-Master® Regular Water-Based Adhesive and between 8°C/46°F and 15°C/60°F for Dek-Master® Low Temp Adhesive. The plywood surface must be clean and dry, with no more than 12% moisture content. Do not apply to pressure treated lumber because of the moisture content.

9.

Remove tacks or staples and fold the vinyl sheet back as shown at left. Apply Dek-Master® Adhesive to vinyl first, then to the deck surface.

IMPORTANT: Both surfaces must have a complete, even coat of adhesive.

10.

Again, push adhesive coated vinyl sheet down onto the deck surface by working from the middle point to the edge of the deck, then outwards to the ends. The first piece is now adhered.

IMPORTANT: Ducan recommends using your hands to smooth the vinyl down. If an air bubble forms in the vinyl, smooth it out with your palms to remove it. If you find you are acquiring air bubbles under the vinyl this could be from temperature or too much adhesive. Push the bubbles down. Most likely after a few days they will go down and stay down on their own.

Note: Be careful walking on the vinyl, avoid twisting too fast as the adhesive may not be completely set. Use of a roller or rolling pin can cause stretching of the vinyl. Do Not Use.

11. Subsequent vinyl sheets must be overlapped 1" to the adhered vinyl sheets. To prepare subsequent sheets, place a piece of 1" masking tape to the underside edge (fuzzy side) where the overlap will be. It is necessary to follow this step to ensure the Adhesive does not interfere with the Overlap Cement process. This tape will be removed prior to application of the Overlap Cement.
12.

Install 1" masking on the edge of the first panel. (patterned side) This will protect the vinyl against any adhesive that may end up on it. It will also act as a guide as you slide the corresponding sheet over to achieve the necessary 1" overlap.

This tape will be removed prior to application of the Overlap Cement.

13.

Follow the same procedure as you did for the first panel installation folding the sheet over half way, adhering and then folding back the other half in the same way. Use waxed paper to protect the lower panel while gluing the second one. Do not try to glue the vinyl to the cant strip at the same time on your final sheet. The vinyl may try and pull away as it dries leaving a hollow area under it without being attached.

Finishing

 

1.

Applying Overlap Cement
Temporarily apply 1" masking tape to the lower sheet 1/16" away from the overlapping edge. This is to catch the excess Overlap Cement but also leave a slight line of Overlap Cement to create a moisture proof barrier. (Be sure you pick up the tip for the Overlap Cement bottle when you purchase it at the store.) Extrude a 1/4" bead of Overlap Cement 1/2" under the overlapped edge. Do only 2 to 5 feet at a time. Using a wallpaper seam roller on top of the overlap, apply pressure lengthwise, then crosswise, squeezing some of the Overlap Cement from beneath the seam onto the masking tape.

IMPORTANT: To ensure the overlap bond is secure, look eye level to the edge of the seam to make sure there is a water tight seal. A cove should be present on the overlap edge. (There should be no voids where moisture can penetrate under the seam.) Add more Overlap Cement if needed.

WARNING: Do not use excessive pressure with the seam roller as this could distort the vinyl layer.

Remove masking tape. Draw excess smooth. Do not apply below 8°C.

 

2. Finishing the Edges
Now that your deck surface is completely sealed it's time to prepare the vinyl for attachment to the flashings and cant strip.
3.

Cant strip Finishing
If not installing up the wall and under the siding use a razor knife to trim vinyl sheet to 1/4" above cant strip. Make sure that the vinyl is completely adhered to the cant strip using Dek-Master® Trim Adhesive. With a small brush suitable for enamel paints apply another coat of Trim Adhesive to the cant strip and onto the back of the vinyl. Let dry until tacky and then tightly push the vinyl against the cant strip to make sure it is well adhered. Tuck the extra vinyl down between the wall and the cant strip then caulk along the top edge using Dek-Master Caulk/Sealant. If installing up the wall adhere vinyl to the cant strip then up the wall 8". Vinyl can be stapled or tacked on the upper edge to keep it from moving when installing the siding.

Tip: If Dek-Master Caulking is not available, an outdoor polyurethane caulking may be substituted.

WARNING: Do not use silicone or latex based caulking as they are incompatible.

4. Finishing Outside Corners
Trim the Dek-Master® vinyl to 1/4" - 1/2" below the edge of the flashing. At the corners, cut the vinyl from the outside edge to the deck corner in line with one edge. Apply Overlap Cement to the side flap and flashing. Fold side flap around corner first, followed by the top flap.
5. Finishing Flashing
Ensure the vinyl is completely adhered to the flashing by using Dek-Master® Trim Adhesive. Then with a razor knife, trim the vinyl to 1/4" - 1/2" below the edge of the flashing. With a small brush suitable for enamel paints apply another coat of Trim Adhesive to the flashings and onto the back of the vinyl. Let dry until tacky then tightly push the vinyl against the flashing to make sure it is well adhered before installing the U-Channels. Tuck vinyl under the bottom edge of the flashing and apply U-Channel deck clips. Trim corners.
Tip: Apply drops of Overlap Cement every 4" to 6" inside the U-Channel canal to chemically weld it to the vinyl covered flashing.


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  • I can honestly recommend Ducan products and by doing it myself saved nearly $5000.00 on a 450 square foot deck! Steve Anthony, Okanagan Falls, BCread more »