BlockShield SA Plus For Roofs Installation

pdf Galvanized Steel B Deck Instructions (PDF) (3.62 MB)

pdf Concrete Deck Instructions (PDF) (1.78 MB)

Installation Video 

 Overview

• BlockShield SA Plus is a self-adhered, non-asphaltic air and vapor barrier roofing underlayment designed for applications either direct to deck, or over a thermal barrier board or structural concrete.*
• BlockShield SA Plus is made from a proprietary high strength polypropylene sheet with a very aggressive adhesive layer that effectively bonds to virtually all deck types.
• BlockShield SA Plus can be installed on steep slope roofs (>2”:12”) and on low slope roofs (1/4":12" <2":12") in both commercial and residential construction.
• Top surface is slip resistant, UV stable, and resistant to punctures, tears, and foot traffic.

*See installation instructions for concrete substrates

Product Applications

• Apply directly to galvanized or painted steel Type B Deck
• Apply to thermal board fastened to galvanized steel deck
• OSB
• Plywood
• Gypsum
• Structural Concrete*

Safety

• CAUTION: Release liners are slippery. To prevent injury, liner should be removed from under foot as soon as membrane is installed and disposed of properly.
• Persons who access any roofs, involved with roof construction, repair or maintenance shall use appropriate personal protective equipment including, but not limited to, hard hats, eye protection, and leather gloves and must be trained on safe practices relevant to their work.
• Where the use of ladders, scaffolds, platforms, or temporary floors are utilized, safety lines and safety harnesses shall be used. Please access the OSHA Web site at www.osha. gov, contact your local OSHA office, or visit the local federal bookstore to obtain the most current information on OSHA 29 CFR 1926.

Delivery, Packaging And Storage

• Store roll materials vertically on end in original packaging at temperatures between 40°F and 120°F (4ºC - 49ºC).
• Protect materials from direct sunlight and inclement weather until ready for use.

Substrate Information

Steel surfaces must be clear of any oil residue and moisture. Wood decks must be dry to the touch and clear of dirt and dust. BlockShield SA Plus can be installed in 20°F (-6°C) and rising temperatures. BlockShield SA Plus surface is white, reducing the overall temperature gain during installation.

Limitations

 If desired adhesion is not attained between membranes due to site conditions, VaproShield recommends applying a bead of VaproBond as an additional solution to pressure rolling.

Galvanized Steel B Deck Installation Instructions

STEP 1 Unroll BlockShield SA Plus onto the clean, dry steel deck. Once BlockShield SA Plus is in place, while holding the sheet tight, remove the silicone release film by pulling diagonally.	STEP 2 When installing subsequent rolls of BlockShield SA Plus ensure 3” (7.5 cm) side laps are maintained. After multiple rolls are installed, roll the membrane  with a weighted roller, min. 70 lbs.

CAUTION: Release liners are slippery. To prevent injury, liner should be removed from under foot as soon as membrane is installed and disposed of properly.

STEP 3
At the end of each roll, install a metal sheet plate (24 GA x 6"W) to support the end lap between flutes. Ensure 6" (15.2 cm) end laps are maintained on metal sheet plate for each course during installation.

STEP 4 Cover as soon as possible to limit exposure to UV and construction traffic. When left exposed to precipitation, positive slope and adequate drainage is required. The effects of weathering may vary based upon local  climate and project conditions. May be used as temporary protection at the discretion of the general contractor or building professional. Maximum exposure is 6 months prior to coverage. CAUTION: Release liners are slippery. To prevent injury, liner should be removed from under foot as soon as membrane is installed and disposed of properly.

CAUTION: Release liners are slippery. To prevent injury, liner should be removed from under foot as soon as membrane is installed and disposed of properly 

Concrete Deck Installation Instructions

STEP 1 1A. Galvanized Type B metal roof deck installed by others. 1B: Concrete deck installed by others.	STEP 2 2A. Prime surface as required. Contact VaproShield Technical for primer requirements.
CAUTION: Release liners are slippery. To prevent injury, liner should be removed from under foot as soon as membrane is installed and disposed of properly. STEP 3 3A. Unroll BlockShield SA Plus onto primed surface. 3B. Once placed, while holding the sheet tight, remove the silicone release paper. Remove release paper from under foot.	STEP 4 4A. Install subsequent rolls of BlockShield SA Plus ensure a 2 ½” min. (6.35cm) side laps are maintained. 4B. After multiple rolls are installed, roll the entire section of installed membrane with a weighted roller, min. 70 lbs.
STEP 5 5A. At the end of each roll, ensure 6" (15.2) end laps are maintained.
	STEP 6 Cover as soon as possible to limit exposure to UV and construction traffic. When left exposed to precipitation, positive slope and adequate drainage is required. The  effects of weathering may vary based upon local climate and project conditions. May be used as temporary protection at the discretion of the general contractor or building professional. Maximum exposure is 6 months prior to coverage.