Owens Corning

Owens Corning®

DeckSeal MA NailBase

NOTE: If installing the DeckSeal MA NailBase under the DeckSeal SA SBS Cap see the following instructions for each of those components.

This product is to be used under Owens Corning® DeckSeal SA SBS Cap and should not be left exposed.

Do not use Owens Corning® DeckSeal MA NailBase in a torch down application.

Storage

Owens Corning® DeckSeal MA NailBase should be stored at room temperature whenever possible. Do not store at temperatures above 90°F (32°C).

Precautionary Notes

Owens Corning Roofing recommends strict adherence to OSHA safety regulations.

DeckSeal MA NailBase is designed to be installed on roof slopes between 1/4:12 and 2:12 and is to be applied directly to an exterior grade of Plywood or OSB. Plywood must be minimum 15/32 inch and OSB minimum 7/16 inch. Check local codes. Owens Corning® DeckSeal SA SBS Cap is to be applied directly to Owens Corning® DeckSeal MA NailBase or DeckSeal SA Base/Ply.

  • Apply only when the weather is dry and the zambient temperature is 45°F (7°C) and rising. Do not install when water in any form (i.e. rain, dew, ice, frost, snow) exists. All roof deck application areas must have positive drainage, continuous support, and be structurally sound to support the dead load requirements of the roofing system.
  • Apply only over clean, dry, dust-free surfaces.
  • Ensure installation of DeckSeal MA NailBase does not prevent or interfere with ventilation of the existing structure.

Failure to follow manufacturer’s application instructions may void product warranty.

Plan the job so that the DeckSeal MA NailBase is covered by the DeckSeal SA SBS Cap the same day.

2 Ply or 3 Ply Roofing System

Application

Step 1

Sweep the roof surface to remove any dust, dirt, or debris prior to starting installation.

Step 2

Cut the DeckSeal MA NailBase to manageable lengths. Allow the cut sheets to relax prior to installation. Failure to allow the sheets to relax may result in wrinkles in the finished surface.

Step 3

Initiate starter course:

  • For a 2 ply (layer) system the starter course will always be 1/2 of the roll width.
  • For a 3 ply (layer) system the starter course will always be a 1/3 of the roll width (approximately 12 inches) and cut from the DeckSeal MA NailBase roll. (Cutting on one of the 12 inch lines is approximately 1/3 of the roll width).

The side lap seams of any 2 or 3 ply system layer should always be offset from the other layers.

Step 4

Lay the material flat on the roof aligned with the eaves or at the lowest point of the roof.

Step 5

Nail the starter course at 6 inches on center across the center of the sheet using 1 inch diameter metal cap nails. See Fig. 1

Do not nail along the edges at this time (edge metal will be added later), only in the center. If additional pieces are needed to complete the starter course, continue to install each piece overlapping the preceding piece by 6 inches. Nail in the middle of the 6 inch end lap at 6 inches on center.

Step 6

When the eaves starter sections are completed, position the next course (and all subsequent courses) by overlapping the previous course by 3 or 4 inches. Install metal cap nails at 6 inches on center in the 3 or 4 inch side lap.

All additional courses will require 2 rows of nails at 6 inches on center, evenly spaced vertically, and staggered down the center of the sheet. All end laps should be overlapped a minimum 6 inches. See Fig. 1

When installing each course stagger the end laps by 36 inches between courses.

Fig. 1

Edge Metal Install

For 2 ply systems, the edge metal is installed directly over the base sheet. For a 3 ply system, the edge metal is installed over the second ply (layer).

  1. The edge metal must be minimum 24 gauge galvanized steel or 0.040 inch formed aluminum, primed with either an asphaltic primer that meets ASTM D41 or a commercially available water-based acrylic primer.
  2. The roof flange of the edge metal should be 3 or 4 inches wide.
  3. Primed edge metal must be dry to the touch before membrane application.
  4. Install the roof flange of the edge metal over the base sheet at the lowest point on the roof. Nail the edge metal 4 inches on center in a staggered pattern. See Fig. 1
  5. Install a minimum 8 inch wide strip of self-adhered DeckSeal SA Base/Ply over the edge metal leaving 1/2 inch of edge metal exposed at the eaves.

NOTE: If installing the DeckSeal SA Base/Ply under DeckSeal SA SBS Cap, see the DeckSeal SA Base/Ply box for instructions for that component.

Owens Corning®

DeckSeal SA Base/Ply

This product is to be used under Owens Corning® DeckSeal SA SBS Cap.

Do not use Owens Corning® DeckSeal SA Base/Ply in a torch down application.

Storage

Owens Corning® DeckSeal SA Base/Ply self-adhered membrane should be stored at room temperature whenever possible. Do not store out of the box for prolonged periods, or in temperatures above 90°F (32°C). Do not remove the roll from the box until it is to be installed.

Precautionary Notes

Owens Corning Roofing recommends adherence to OSHA safety regulations. DeckSeal SA Base/Ply is designed to be installed on roof slopes between 1/4:12 and 2:12 and is to be applied directly to an exterior grade of Plywood or OSB when used as a base sheet in a 2 ply system, or Owens Corning® DeckSeal MA NailBase when used as the second ply in a 3 ply system.

Note: When installing DeckSeal SA Base/Ply, existing Plywood and/or OSB must be primed with either an asphaltic primer that meets ASTM D41 or a commercially available water-based acrylic primer. New plywood and DeckSeal MA NailBase do not need to be primed.

Note: Any primed substrate must be fully dry prior to installation. Refer to manufacturer’s recommendations. Plywood must be minimum 15/32 inch and OSB minimum 7/16 inch. Check local codes.

  • Apply only when the weather is dry and the ambient temperature is 45°F (7°C) and rising. Do not install when water in any form (i.e. rain, dew, ice, frost, snow) exists. All roof deck application areas must have positive drainage, continuous support, and be structurally sound to support the dead load requirements of the roofing system.
  • Apply only over clean, dry, dust-free surfaces.
  • Ensure installation of DeckSeal SA Base/Ply does not prevent or interfere with ventilation of the existing structure.

Failure to follow manufacturer’s application instructions may void product warranty. Plan the job so that the DeckSeal SA Base/Ply is covered by the DeckSeal SA SBS Cap the same day.

Application

Step 1

Sweep the roof surface to remove any dust, dirt, or debris prior to starting installation.

Step 2

Cut the DeckSeal SA Base/Ply to manageable lengths. Allow the cut sheets to relax prior to installation. Failure to allow the sheets to relax may result in wrinkles in the finished surface.

Step 3

Initiate starter course:

  • For a 2 ply (layer) system the starter course will always be 1/2 of the roll width.
  • For a 3 ply (layer) system the starter course will always be 1/3 of the roll width. (Cutting on one of the 12 inch lay lines will leave approximately 1/3 of the roll width.) If using SA Base/Ply as a second layer of a 3 ply system, the starter course for that layer will be 2/3 of the roll width.

The side lap seams of any 2 or 3 ply system layer should always be offset from the other layers.

Step 4

There are several ways to remove the release liner from the DeckSeal SA Base/Ply. One method is as follows: Lay the material flat on the roof aligned with the eaves edge at the lowest point on the roof.

Step 5

Fold the aligned sheet back half way exposing the release liner. See Fig. 1.

Step 6

Peel release film at a 45° angle in a constant motion, while firmly holding the half of the sheet that is in contact with the roof in place as the liner is removed. See Fig. 1.

Fig. 1

Step 7

Use hand or foot pressure to bond that portion of the sheet to the deck. If the split release liner remains on the opposite half of the sheet, flip the opposite half back and remove the remaining release liner. Use hand or foot pressure to bond that portion of the sheet to the deck. See Fig. 2.

Fig. 2

Step 8

If additional pieces are needed to complete the starter course, the end lap to be overlapped must be cut at 45° angles on the top and bottom corners. See Fig. 3. The top corner on the piece that is overlapping the previous piece must also be cut on the top corner at a 45° angle. See Fig. 3. The overlap is to be 6 inches. Remove the release liner and adhere as with the previous sheet.

Fig. 3

Step 9

Roll side laps and end laps firmly with a hand roller to ensure full adhesion. See Fig. 4. If necessary, hot air weld or apply modified asphalt flashing cement at 45° cuts or at end lap seams.

Fig. 4

Step 10

As each course is completed, roll the course with an 80 pound linoleum roller. Start at the center and work outward to remove trapped air. See Fig. 5.

Fig. 5

Step 11

When the eaves edge sections are completed, position the next course by overlapping the starter course by 3 to 4 inches. When installing each subsequent course stagger the end laps by 36 inches between courses.

Step 12

One method to remove the release liner from a full sheet of DeckSeal SA Base/Ply is as follows:

  1. Position the sheet on the 3 or 4 inch overlap lay line and roll the bottom of the sheet half way back to expose the split release liner.
  2. Peel release film at a 45° angle in a constant motion, while firmly holding the half of the sheet that is in contact with the roof in place as the liner is removed.
  3. When the release film has been removed, carefully roll the sheet back down and press into place.
  4. Roll the opposite half of the sheet back and remove the release liner using the same method as in step “B.”
  5. Roll the sheet back down and press firmly into place.

Step 13

If additional pieces are needed to complete the course, the end lap corners are to be cut at a 45° angle as was done in Step 9. The overlaps are to be 6 inches.

Step 14

When the SA Base/Ply courses are complete roll the entire surface with an 80 pound linoleum roller.

Edge Metal Install

For 2 ply systems, the edge metal is installed directly over the base sheet. For a 3 ply system, the edge metal is installed over the second ply (layer).

  1. The edge metal must be a minimum 24 gauge galvanized steel or 0.040 inch formed aluminum, primed with either an asphaltic primer that meets ASTM D41 or a commercially available water-based acrylic primer.
  2. The roof flange of the edge metal should be 3 or 4 inches wide.
  3. Primed edge metal must be dry to the touch before membrane application.
  4. Install the roof flange of the edge metal over the base sheet at the lowest point on the roof. Nail the edge metal 4 inches on center in a staggered pattern. See Fig. 2.
  5. Install a minimum 8 inch wide strip of self-adhered DeckSeal SA Base/Ply over the edge metal leaving 1/2 inch of edge metal exposed at the eaves.

Owens Corning®

DeckSeal SA SBS Cap

This product is not to be used in a torch down application.

Owens Corning® DeckSeal Low Slope products should be installed by a professional roofing contractor.

Storage

Owens Corning® DeckSeal SA SBS Cap should be stored at room temperature whenever possible. Do not store out of the box for prolonged periods, or in temperatures above 90°F (32°C). Do not remove the roll from the box until it is to be installed.

Precautionary Notes

Owens Corning Roofing recommends adherence to OSHA safety regulations.

DeckSeal SA SBS Cap is designed to be installed on roof slopes between 1/4:12 and 2:12 and is to be applied to an exterior grade of Plywood or OSB. Plywood must be minimum 15/32 inch and OSB must be minimum 7/16 inch. DeckSeal SA SBS Cap is to be applied directly to Owens Corning® DeckSeal MA NailBase or DeckSeal SA Base/Ply.

  • Apply only when the weather is dry and the ambient temperature is 45°F (7°C) and rising. Do not install when water in any form (i.e. rain, dew, ice, frost, snow) exists.
  • All roof deck application areas must have positive drainage, continuous support, and be structurally sound to support the dead load requirements of the roofing system.
  • Apply only over clean, dry, dust-free surfaces.
  • Ensure installation of DeckSeal SA SBS Cap does not prevent or interfere with ventilation of the existing structure.

Failure to follow manufacturer’s application instructions may void product warranty.

Application

Step 1

Sweep the roof surface to remove any dust, dirt, or debris prior to starting installation.

Step 2

Cut the DeckSeal SA SBS Cap to manageable lengths. Allow the cut sheets to relax prior to installation. Failure to allow the sheets to relax may result in wrinkles in the finished surface.

Step 3

The DeckSeal SA SBS Cap has a release film covering the selvage edge. The cap sheet should be installed with the selvage edge away from the eaves edge. The DeckSeal SA SBS Cap starter course is always installed full width.

Step 4

Lay the material flat on the roof aligned with the eaves edge at the lowest point on the roof.

One method to remove the release liner from the sheet of DeckSeal SA SBS Cap is as follows:

Step 5

Fold the aligned sheet back half way, exposing the split release liner. See Fig. 1

Step 6

Remove release liner at a 45° angle in a constant motion, while firmly holding the half of the sheet that is in contact with the roof in place as the liner is removed. See Fig. 1

Now that the release liner is removed, roll the sheet and press firmly into place.

Now roll the opposite half of the sheet back and remove the release liner using the same method as above.

Fig. 1

If additional pieces are needed to complete the starter course, the end lap to be overlapped must be cut at 45° angles on the top and bottom corners. See Fig. 2

The top corner on the piece that is overlapping the previous piece must also be cut on the top corner at a 45° angle. See Fig. 2

The overlap is to be 6 inches. Remove the release liner and adhere as with the previous sheet.

Remove the side lap selvage edge release film on the area to be overlapped.

Do not remove the remaining release film covering the side lap selvage edge at this time.

Fig. 2

Step 7

The end of each roll of DeckSeal SA SBS Cap has a factory end lap selvage edge covered with a release film. Remove the end lap release film and press the overlapping sheet into place. See Fig. 3

If necessary, during cool weather, hot air weld or apply modified asphalt flashing cement at all 45° cuts or at end lap seams and T-joints.

Where there is no factory selvage edge for end laps, the following methods can be used.

Fig. 3

HOT AIR WELDING

The area between the granular surface and self-adhesive backing can be heated with a hot air welding tool and rolled with a hand roller. This will ensure a water tight seal to the end laps. See Fig. 4

Fig. 4

MODIFIED ROOF CEMENT

In lieu of hot air welding, the top layer can be set in a thin layer of modified asphalt flashing cement that is at least 6 inches wide and approximately 1/8 inch thick. Take care to prevent roof cement from oozing onto exposed area. If this should occur, sprinkle loose granules on the exposed asphalt immediately. See Fig. 5

End laps must be a 6 inch minimum and fully adhered.

Fig. 5

Step 8

Press each sheet into place with firm, even pressure.

Step 9

Roll edges and all lap seams firmly with a hand roller to ensure full adhesion. After each course is completed roll the course with an 80 pound linoleum roller. Start at the center and work outward to remove trapped air.

Step 10

Blind back-nailing of self-adhered cap sheet membrane every twelve (12) inches at lap location is required on all slopes greater than 1 inch per foot (1:12). Use galvanized steel, stainless steeel or aluminum nails with a min. 12 guage shank and 3/8 inch diameter head. Owens Corning recommends that fasteners comply with ASTM F1667.

For the succeeding course, position the next sheet by completely overlapping the selvage edge of the previous sheet. See Fig. 6

Fig. 6

Be sure to offset end laps on each subsequent course a minimum of 36 inches.

Only remove enough of the selvage edge release film on the preceding roll to complete each section of the install. Removing more film than is necessary may cause the exposed adhesive to stick to the release liner of subsequent sheets during alignment. See Fig. 7

Remove release liner on succeeding course as previously described.

Step 11

After adhering rolls, it is required that uniform pressure be applied to the entire deck area using a 80 pound linoleum roller. Care must be taken to prevent injury when rolling, especially on sloped surfaces.

Fig. 7

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