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1. Roof Deck Preparation
Clean the roof surface prior to installation and ensure the roof surface is clean, free of dust, dirt, rust, oil, grease, and loose material. The roof surface must be dry as this product will not adhere to a wet surface.
Trapped moisture may vaporise and negatively affect the performance of EPDM Rubber Flat Roof Solutions. This system is best installed onto a timber deck such as exterior grade ply or OSB3.
Any residual from an old roof should either be removed or over boarded as this will adversely affect the performance of the EPDM rubber membrane.
7. Apply Water Based Adhesive
Apply Water Based Adhesive using a 9″ paint roller.
Leave a 100mm unbonded area around the roof deck perimeter. This will be used later to bond with our Contact Adhesive.
Roll the EPDM membrane back into position immediately, whilst the adhesive is STILL WET.
If the adhesive dries out (and becomes opaque), before the membrane is relayed then a thin coat can be applied to the back of the MEMBRANE and allowed to dry before installing.
Apply adhesive to a smaller area in hot weather to avoid premature drying.
Please note: water-based adhesives should only be used when the outside temperature is 5 degrees and rising and no chance of freezing conditions in the following 24-48 hours.
9. Apply Contact Adhesive to Roof Perimeter
Apply a THIN coat of Contact Adhesive to the roof deck perimeter (approximately 150mm width) and any vertical upstands.
Also, apply the Contact Adhesive to the back of the rubber membrane.
Contact Adhesive can be used to bond the rubber membrane to most porous and non-porous surfaces so it can be used in place of water-based deck adhesive if necessary.
10. Ensure Contact Adhesive is Touch Dry
Ensure the Contact Adhesive is touch dry. You can use your finger to test this. If it is still wet and not sticky, wait longer.
The Contact Adhesive gives off a vapour as it cures.
If the membrane is bonded once the Contact Adhesive has fully dried, bubbles/blisters may appear.
11. Cut Back Excess Material
Trim any excess material from walls and upstands, using the chase out as a guide.