Everbuild 507 Rendagrip – 10Ltr Tub

Everbuild 507 Rendagrip is a render bonding agent built specifically for external rendering work where adhesion needs to be reliable from the start. It carries a fine aggregate suspended in a waterproof polymer, and that combination does two things at once: it gives the render a proper mechanical key to grip onto, and it cuts down suction on porous substrates so your render coat behaves consistently across the whole surface. If you’ve ever had render pull away from lightweight blockwork or a smooth fair-faced concrete panel, this is exactly the kind of product that prevents that happening.

The red pigment is a practical touch. It shows you clearly where you’ve been and where you haven’t, so patchy coverage isn’t something you discover after the render’s on. One coat is all it takes. Apply it, let it dry, and then render directly onto it. That’s the whole system — no mixing, no diluting, no faffing about with ratios.

Where Everbuild 507 Rendagrip Earns Its Keep

This product is suited to external rendering jobs where the substrate either lacks natural key or is too porous to give consistent results without treatment first. Lightweight aircrete blocks are a classic case — smooth, absorbent, and not particularly welcoming to render without a bit of help. Dense concrete is the other end of the scale: not porous, but too smooth for render to bond reliably without something to grip. Rendagrip handles both situations with the same product and the same process, which keeps things simple on site.

It can be applied to damp surfaces, which matters on external work where you don’t always have the luxury of waiting for a substrate to fully dry out before your programme moves on. Application is straightforward — brush or roller, either works — and the 10 litre tub gives you enough product for a decent run of wall area without constantly opening new containers.

The everbuild 507 rendagrip formula is ready to use straight from the tub. There’s no on-site preparation required, which reduces the chance of getting the mix wrong and creating weak spots in the key coat. The fine aggregate stays evenly distributed through the product, so coverage is consistent rather than patchy.