Cekol C-40 - Plasterboard patching mortar - 5kg
What is CEKOL C‑40 Plasterboard Patching Mortar?
CEKOL C‑40 is a high‑strength patching mortar designed specifically for repairing plasterboard surfaces, filling deep cavities, reinforcing damaged areas, and rebuilding missing sections of gypsum boards. Its reinforced mineral formula provides excellent adhesion, high durability, and fast setting, making it ideal for both renovation and installation work.
C‑40 is engineered for structural repairs, not just cosmetic smoothing — allowing installers to rebuild edges, corners, holes, and cut‑outs with confidence. Once cured, the surface can be sanded, drilled, screwed into, or finished with fillers and paints.
Key Features
High‑strength patching mortar – ideal for repairing damaged plasterboard
Reinforced mineral formula – durable and crack‑resistant
Perfect for deep fills and structural repairs
Excellent adhesion to gypsum, plasterboard, and mineral substrates
Fast setting – speeds up renovation work
Easy to apply and shape
Can be sanded, drilled, and finished after curing
16kg bag – ideal for professional use and larger repairs
Technical Specification
| Specification | Detail |
|---|---|
| Product Type | Patching mortar for plasterboard |
| Weight | 16kg and 5kg |
| Consistency | Dry powder (mix with water) |
| Application Thickness | Suitable for deep fills |
| Use Areas | Interior |
| Substrates | Plasterboard, gypsum, mineral surfaces |
| Finish | Hard, durable, sandable |
| Setting Time | Fast (varies with conditions) |
Application Checklist
Prepare the damaged area Remove loose material and dust; ensure the surface is stable.
Mix with clean water Blend to a thick, workable consistency.
Apply with trowel or spatula Fill cavities, rebuild edges, or patch holes as required.
Shape and level Form the repair before the mortar begins to set.
Allow to cure Once hardened, the repair can be sanded or mechanically worked.
Finish with filler or paint Apply CEKOL finishing products or paint directly after preparation.
Where to Use CEKOL C‑40
Repairing damaged plasterboard
Filling deep holes and cut‑outs
Rebuilding corners and edges
Strengthening weakened gypsum boards
Preparing surfaces before finishing
Renovation and installation work
Why Installers Choose CEKOL C‑40
Professionals rely on CEKOL C‑40 because it offers:
Exceptional strength for structural repairs
Reliable adhesion to plasterboard and gypsum
Fast, predictable setting
A durable, sandable finish
Versatility across renovation tasks
It’s a robust, dependable patching mortar that restores plasterboard to like‑new condition.