Roundtower Marine LP8 MortarRoundtower Marine LP8 Mortar Roundtower Marine LP8 Mortar is a ready mixed natural cement mortar developed for building, bedding, and pointing masonry in marine and water bearing environments. Manufactured using Natural Cement and selected natural sands, it provides rapid strength development, excellent adhesion, and resistance to washout in damp, tidal, and submerged conditions. Marine LP8 is specifically designed for softer historic masonry where

Its calcium silicate structure allows the board to absorb

✅ Ideal for Detail Work – Perfect for lime pointing

and application method will vary depending on the substrate

To prevent dusting on friable lime-based surfaces

Layer Function Casting Blend Decorative finish layer Muffle Coat Lightweight backing layer Substrate/Mould Support structure

harbour works

The free lime content contributes to autogenous healing of small micro-cracks during carbonation over time

The plaster can typically be applied in:

It can be exposed to UV and the weather for up to 4 weeks during the roof refurbishment to provide temporary protection to the building prior to external insulation and permanent roof covering being installed over the top

concrete and block

Thermal Efficiency & Thermal Mass – Low λ-value and high density ensure excellent insulation while stabilising internal temperatures year-round

It will seal the gap between the window or door frame and the wall to ensure there will be no air leakage