Johnstone's Trade Stormshield High Performance Render Basecoat is a cement-based polymer-modified render for use within Johnstone's Trade Stormshield external wall insulation systems or as part of a direct-to-masonry render solution. This product is grey in colour.

 The product should be applied directly onto suitably prepared masonry surfaces or approved insulation boards. This specially developed basecoat for masonry and external wall insulation systems will set in 24 hours in the correct drying conditions.

Coverage
Onto Masonry: 1.5m2 per bag at 10mm Thickness
Onto Insulation: 2.6m2 per bag at 6mm Thickness

FEATURES AND BENEFITS

• Can be applied by hand or sprayed
• Provides an all-weather, tough, long lasting basecoat
• Water Repellent
• Cement Based High Polymer render basecoat
• Matt finish

APPLICATION

Please note, to avoid dampness and discolouration, rending should be avoided below DPC or within 150mm of ground level

Use a stainless steel float or suitable spray equipment to apply the Basecoat to a depth of 3-4mm (onto insulation) or 5mm (onto masonry) and use a notched trowel to prepare the basecoat for the application of a reinforcing mesh.
Bed in the mesh using a stainless steel float and ensure that the joints overlap by 100mm. Once the initial set has take up, apply a second coat of this basecoat with a depth of 3-4mm (onto insulation) or 5mm (onto masonry) to produce a sandwich between the mesh and second coat.

Johnstone's Trade Stormshield High Performance Render Basecoat should be applied to a total thickness of 6mm (onto insulation) or 10mm (onto masonry).

Finish the basecoat with a notched trowel or sponge float depending on the finish you will be applying.