The materials are used for hydro and thermo isolation (consequently), thus it’s reasonable to cover XPS with EPDM when building a roof. I’m interested mostly if anyone tried to combine them.
Can EPDM be installed on insulation?
Constructing a Flat Roof Using EPDM
The insulation and vapour barrier can be mechanically fixed using fasteners and washers or a self-adhesive vapour barrier such as Alutrix can be installed with insulation bonded on top, using PU Adhesive Battens.
What do you put under EPDM roofing?
EPDM should be bonded over 5/8″ plywood, 5/8″ OSB board, or polyisocyanurate board with a fiberglass backing.
Can you put rubber roofing over rolled roofing?
You cannot install an EPDM rubber roof directly over asphalt, tar, shingles or felt paper. Install on 5/8” plywood or OSB. You can install it over existing roofing only if you first place the plywood or OSB decking over the existing roof. Oils in the asphalt and tar roofing will cause problems in the EPDM.
What is under a rubber roof?
Underlayment is a waterproof or water resistant barrier that’s installed directly to your roof deck before the actual roof material is installed. Here are some good reasons to use underlayment: It provides protection for the roof deck before and during the installation process.
Can EPDM be installed over EPDM?
Then either EPDM can be removed or a cover board can be installed over the EPDM, then the spray foam installation can begin.
Does EPDM have to be glued down?
When you are fitting an EPDM roof, you need to make sure that it is glued down properly. During the membrane application process, you will need to apply two different types of adhesive. The first is a water-based adhesive. Use Permaroof deck adhesive for the best results.
Can you walk on EPDM roof?
Yes to an extent. EPDM is designed to take LIGHT foot traffic during installation and for occasional cleaning or maintenance. If you require more use than this, i.e. for a balcony then there are additional materials that can be laid over your EPDM for a more durable solution.
What’s better EPDM or TPO?
EPDM roofs are the most economical choice for single ply roofing membranes. TPO roofing membranes are more expensive than EPDM. Regardless of which membrane you choose, it is better to spend more money and invest in a thicker membrane. Both EPDM and TPO roofs perform better and last longer if they are thicker.
What are common problems with EPDM roofs?
Three most common problems with Rubber Roofs is improper installation, shrinkage and the seams. While the rubber roofs are known to be durable, they also need maintained. EPDM roofs are fully adhered or as many call it glued down. The system is not attached mechanically.
What is the lifespan of an EPDM roof?
EPDM roof membranes remain stable over time and can have a life expectancy of over 50 years. ** Made from synthetic rubber, EPDM roofing membranes have two primary ingredients, ethylene and propylene, which are derived from oil and natural gas.
Can you lay EPDM in the rain?
EPDM Membranes require the sustrate to be dry prior to installation. This is so the the adheshive & primers can effectively bond the rubber to roof deck. EPDM products will not adhere to wet or damp surfaces. Trapped moisture may vaporize and negatively affect the performance of the membranes.
