What is it?
Stopgap 850 is a non structural exterior grade smoothing compound for use in light to medium duty applications to smooth and level rough or mechanically damaged concrete or sand / cement screeds.
Where is it used?
Stopgap 850 is ideally suited for smoothing areas such as balconies, patios, garages and walkways and is unaffected by rain or frost when set and dried. It is also suitable for smoothing subfloors prior to the application of a suitable non-slip coating or external covering such as artificial grass.
What’s different about it?
Stopgap 850 can be left as a stand-alone exterior wearing surface. To give a more natural surface finish and to reduce the potential for slipping, if left uncovered, it is recommended that a scratch coat is applied to the surface and brush finished to a textured profile.
Something you might not know about the product:
Stopgap 850 is also suitable for internal application over damp, uneven concrete and sand/cement screeds, prior to application of Stopgap Waterproof Surface Membranes and Stopgap Isolator Membrane.
For more information about Stopgap 850, visit the F. Ball website.