EPDM Joints and Seams

Forming an Internal Corner Detail In this tutorial, we’re going to show you how to form an internal corner detail using EPDM, Quickprime Plus and the penny roller. Step One Prepare the Quickprime Plus by mixing it sufficiently, according to the instructions, and decanting it into a small container, as you only need to use a small amount at a time. Put the lid firmly back on the tin afterwards. Fig 1: Decanting mixed Quickprime Plus into a small container. Step two Tie the little piece of EPDM onto the back wall. This keeps the sheet membrane out of the way while the bonding adhesive is applied. Fig 2: Tying the sheet membrane temporarily out of the way. Step three

Termination to adjacent flat roof detail As with all details, make sure the area is clean and free of loose debris. A minimum 50mm overlap onto the adjacent waterproofing material is required. Apply Bonding Adhesive to the back of the membrane and also the deck… Note: Bonding Adhesive is now dark green in colour. Mate the membrane to the deck once the adhesive has become tacky. Then create a straight edge on the membrane using a crayon and cut away any excess material along the line. Apply a bead of Water Block sealant underneath the edge of the membrane. Secure the termination bar to the deck with All-Purpose fasteners. The Water Block sealant will squeeze out from the termination during

External corner detail using SA flashing The external corner is a common detail and is dealt with as follows:   Offer the membrane up to the base of the upstand and fold back enough material to get the 4” roller in to apply the contact adhesive onto the deck, the upstand, and also on the back of the membrane. Note: Bonding Adhesive (contact adhesive) is now dark green in colour.   Once the contact adhesive becomes tacky, roll the membrane towards the base of the upstand, pushing right into the angle change to eliminate any tenting. Mark a line with the crayon, at 45º from the corner. This will create the resulting V-shape on the upstand. Cut down the marked line

Fit an External Corner Using Quickseam Formflash In this installation guide, we will demonstrate how to handle an EPDM external corner detail using Quickseam Formflash. Step 1: Offer the membrane up to the base of the upstand and fold back enough material to get the 4” roller in and apply the contact adhesive onto the deck, the upstand, and also on the back of the membrane. Note: Bonding Adhesive (contact adhesive) is now dark green in colour. Step 2: Once the contact adhesive becomes tacky, roll the membrane towards the base of the upstand, pushing right into the angle change to eliminate any tenting. Step 3: Mark a line with the crayon, at 45º from the corner. This will create

Installing EPDM on Perimeter Walls and Internal Corners Once the main field sheet is adhered, the perimeter walls can be dealt with. In this step-by-step guide, we will demonstrate how to install EPDM membrane to the perimeter walls and internal corners of your flat roof project. These are potentially vulnerable areas of the roofing and are where water is most likely to cause damage if the installation is not fully watertight. Creating a perfect seal will give you the best chance of successfully realising the full potential and longevity of EPDM roofing. With the membrane 150mm away from the perimeter wall, apply the bonding adhesive to both the back of the membrane and to the area it is

How to Fit EPDM 6” Cover Strip Join In this installation guide, we will demonstrate how to install an EPDM 6” Batten Cover Strip Join. Step 1: Make sure that the contact adhesive is used on both the back of the membrane and deck surface to secure the edges. Note: The Bonding Adhesive (contact adhesive) is now dark green in colour. Step 2: With the membrane now adhered to the deck, lay the tape in situ evenly across the join Step 3: Outline with a crayon where the edges of the tape lie. This gives a guideline for you to apply Quickprime Plus. Make sure that the crayon marks extend beyond the edge of the tape around 20mm each side.

How to Make an EPDM Join with 3” Seam Tape In this installation guide, we will demonstrate how to handle a join using the 3-inch seam tape. Step 1: Ensure the leading edge overlaps the lower sheet by at least 100mm, and has a straight edge along the entire length of the seam. Step 2: Position and mark the sheet with a white crayon. The line should 18mm from the leading edge of the overlap, all the way down the seam. An 18mm timber batten is a useful tool for this. Step 3: Flap the leading edge away from the line. It may be necessary to keep it secured with various items so it will not flap back onto

How to Join EPDM Membrane with Cover Strip Tape Easily join two pieces of EPDM membrane together with EPDM cover strip tape - takes only minutes! Perfect for repairs and batten detail covering, the laminated tape makes life easier. Using EPDM membranes makes light work of flat roofing and is so much better than felt roofing due to its weatherability, resistance to UV and resistance to cracking. Joining two pieces of felt requires toxic bonding substances, heat and specific weather conditions. EPDM can be fitted in the rain with its unique properties and simple application. Pretty useful in the UK! Our straightforward video clearly shows how to cover a seam on a flat roof with angle changes for a