Silicone Render System to the Chimney – Damhead

Large chimney in semi-detached bungalow.

Problem: Due to its age, cracks, bose/hollow areas, and damages done by faulty instalation of power cable, aerial brackets etc., there was a constant leak through the chimney to whole wall in Living Room.

Solution: Silicone Render System + Repointing of the brickwork (done by others)

SILICONE RENDER SYSTEM AS BELOW:
-hammer test to find all the hollow/boss areas in existing wall covering
-removing all defective areas
-dubbing out to bring the level up
-proper, deep-penetrating bonding agent
-PVC beads and trims (1st fix)
-base coat adhesive render (modern, strong and specially enhanced/reinforced, breathable render)
-fibreglass mesh properly embedded in the base coat render
-extra mesh to all the corners of all the openings (stress patches)
-system fixings (if required only) (50mm, large, flat-heads, PVC fixings to mechanical tie the base coat and mesh to the substrate)
-PVC beads and trims (2nd fix)
-2nd pass of the base render
-smoothing the surface
-coloured or white, silicone-based, primer
-coloured or white, thin coat (1.5mm grains), silicone-based top-coat render
-texturing
-low modulus, external quality mastic sealants (all around the system)