External sand finish is a cementious coating which is manually applied to an exterior brick substrate, consisting of swan GP cement ,lime, sand and a water repelant addative. Using applicator tools a cement coat is applied to all brick surfaces and when the Sand Render coating semi-sets the specialist plasterer will prepare the surface flat and void of any hollows.Next tools such as a Sand Finish float is worked over the Cement Render face in a circular motion with the addition of water the objective is to embed the sand particles into the render.Once an even uniform finish is achieved , the finish is then followed by a Sandfinish sponge float that slightly brings the sand textured grains to the surface. Sandfinish must be kept damp ( using a light spray system )in assisting the curing of cement to a durable and solid state. It also prevents hair-line cracking to a minimum. Allow at least 1-2 weeks before painting your Sand Finish wall coating.
If Sand finish is your prefered exterior wall coating and a coloured cement render finish is your style
we can provide an acrylic modified cement render solution which helps in minimising hairline cracks .
To achieve colour consistancy we measure all cement products , and use pure white silica sand ,that
has no clay content .