System accessories
EPDM seam & detail primer
Primer for EPDM membrane surfaces at lap seams, corners and other details. Supplied in 10 kg pails for use before compatible seam tape or seam adhesive.
- Net contents per pail
- 10 kg
- Product role
- EPDM membrane surface preparation at seams and details
- Brand
- Nexbride-Waterproof
- Product code
- WP-ACC-000003
Product highlights
Prepare EPDM seam surfaces
Intended to promote bonding between the prepared EPDM surface and compatible seam tape or seam adhesive.
Seams and detailing areas
Use for surface preparation at membrane laps, internal and external corners and other EPDM details.
Specifications
| Net contents per pail | 10 kg |
|---|---|
| Product role | EPDM membrane surface preparation at seams and details |
| Brand | Nexbride-Waterproof |
| Product code | WP-ACC-000003 |
| Packaging | Pail |
| Application areas | Membrane laps, internal and external corners, and other details |
| Application method | Rub onto the EPDM surface using a brush or scouring pad |
| Condition before seam tape | Fully dry, matt and no longer tacky to the touch |
| Use restriction | Bonding adhesive must not replace this seam primer |
Product overview
Preparing EPDM surfaces for jointing
Use WP-ACC-000003 on EPDM membrane laps, internal and external corners, and other details before applying compatible seam materials. Confirm the primer with the selected EPDM surface and seam tape or adhesive.
Preparation for seam tape
- Identify the bonding area and check for dirt and talc on the EPDM surface.
- Rub the primer over the area with a brush or scouring pad. Confirm any additional cleaning procedure and cleaner compatibility for the membrane.
- Let the coating dry until it is matt and no longer tacky to the touch.
- Apply the compatible seam tape without delay within the confirmed bonding window.
Cover the full bonding area; missed areas can lead to bond failure and leakage. Agree treatment width, coverage, any mixing requirements, drying time and pressure application for the selected system before installation.
Using the correct preparation product
Do not replace seam primer with main-area bonding adhesive. For seam adhesives, request the product-specific procedure; the sequence above applies to seam tape.
Ordering options
- Identify the joining materials
- Provide the EPDM membrane product, surface type and proposed seam tape or seam adhesive. Confirm compatibility for the specific combination and detail.
- Plan seam preparation
- Share the treatment area or seam dimensions and site conditions. Confirm cleaning requirements, coverage, any mixing requirements, drying time, the bonding window and subsequent pressure application.
- Request a quotation
- Specify WP-ACC-000003, the required quantity and delivery destination. Include sample, packaging and technical-information requests; MOQ, lead time, storage conditions and shelf life require confirmation.
Questions before you order
How does this differ from substrate primer?
This primer treats the EPDM membrane surface at seams and details. Substrate primer treats the building surface before main-area bonding.
Can bonding adhesive replace this primer?
No. Main-area bonding adhesive cannot replace seam primer. Prime the full bonding area; missed areas can lead to bond failure and leakage.
When should I apply seam tape?
Wait until the primer is dry, matt and no longer tacky to the touch, then apply the tape without delay within the confirmed bonding window. Ask for timing under your site conditions.
Can I use the same procedure with seam adhesive?
Ask for the procedure for your selected seam adhesive. The rub-on preparation and drying sequence here applies to seam tape; do not assume it covers seam adhesives.