M-ROOF 200 – Single Component Acrylic Roof Membrane

• Degrease the repair area with MEK or similar solvent to remove any surface contamination, using angular grit, grit-blast to SO 8501/4 Standard SA2.5 (SSPC SP10/ NACE 2) and a minimum blast profile of 75 microns.

• Concrete shall be a minimum of 21 days old, and the residual moisture content shall be below 6%.
• Ensure that the concrete is clean and free from dust, laitance, grease, oil, curing compound and existing paint finishes etc.
• Blow holes and defective concrete shall be made good using a proprietary repair compound, e.g. M-CRETE 200 concrete repair mortar.
• Block work should be sealed using M-PRIME 100 surface sealer/ primer.
• Suitable mechanical treatment such as vacuum grit blasting is the preferred treatment before application as this ensures a mechanical ‘key’ for the coating.

• Sweep the roof area and remove any medium to large chippings, moss, lichens and other debris, clean with an anti-fungicidal wash if necessary.
• Repair any splits, holes or blistering with a suitable epoxy concrete mortar, duct tape or membrane system.

• All surfaces will require priming using M-PRIME 100 for a porous substrate such as mineral felt, concrete.
• Non-porous surfaces use M-PRIME 300; both primers should be applied as detailed on the relevant data sheet.

Prior to mixing please ensure the following:

• The base component is at a temperature between 15-25°C.
• Do not apply the material when the ambient or substrate temperature is below 5°C.

• Strip-coat all joints seams and up-stands incorporating the polyester reinforcement sheet. Typically 75.0mm either side of the joint giving a stripe coat of 150mm.

• Application Base Coat – Mix and apply the material directly to the primed surface using a soft-bristled brush, squeegee. Check the wet film thickness on a regular basis ensuring correct coating thickness of a minimum 500. While the base coat is wet embed the glass fibre reinforcing sheet ensuring no blisters or creases, and allow to dry.

• Application Top Coat – Mix and apply the material directly to the base-coat using a soft-bristled brush or squeegee. Check the wet film thickness on a regular basis ensuring correct coating thickness of a minimum 500. Ideally, the reinforcing sheet should just be visible after the top-coat is applied.