Blue Dolphin Scrim Tape 48mm x 45m
Filler on its own doesn't stop a crack coming back. The two surfaces either side are still moving, and cured filler has no tensile strength to resist that movement — so it splits again along the same line, usually within a season.
Scrim tape is what carries the load across the joint.
This is 48mm self-adhesive fibreglass mesh scrim, 45m per roll.
How it works
The open mesh sits over the joint and filler is pressed through it, so the cured filler and the mesh end up as one layer rather than two. The glass strands then span the joint and hold both sides together. When the substrate moves, the tape takes the strain instead of the filler.
Where to use it
- Plasterboard joints — the standard application, scrimmed then filled in two or three passes.
- Settlement and hairline cracks in plaster, once raked out back to sound material.
- Junctions between different materials — plasterboard to plaster, timber to board — which is exactly where differential movement concentrates.
- Making good around new sockets, patches and cut-outs.
Doing it properly
Self-adhesive scrim goes onto the bare joint before any filler. Press it flat with no bubbles or ridges — anything proud of the surface telegraphs straight through the finished decoration.
Then fill through it and feather wide, with a knife at least twice the tape's width. A 48mm tape filled with a 100mm knife leaves a visible band across the wall. Filled with a 250mm knife, it disappears.
- Free delivery on orders over €85 (Ireland)
- Orders placed before 12pm ship same day
- Click & collect available at Ballymount, Dublin
- Tinted paint is non-returnable once mixed
