K Rend HP12 25kg

PRODUCT DESCRIPTION

HP12 Base Coat can be hand or machine applied. It uses ‘High Polymer’ technology for an enhanced performance on difficult substrates such as dense block, unpainted render and brickwork (providing K Rend R7 Primer is used in conjunction with this). It is ideal as a stipple coat or for dense backgrounds and has increased water resistance and adhesion. Incorporation of Alkali Resistant Reinforcing Mesh may be required at stress points such as door and window reveals. HP12 Base Coat can be used in conjunction with all K Rend finishes including Scraped Texture, Thin Coat, Dash, Roughcast and Brick Rend.

FEATURES AND BENEFITS

HP12 Base is polymer modified and cement-based to ensure flexibility and strength. It is designed to be used over ‘difficult substrates’ such as dense concrete and render carrier boards as well as onto blockwork, masonry or stone backgrounds. HP12 Base is normally applied in one coat by hand or render spray machine to a depth of 6-8mm. It can be ruled off to a flat finish and scratched lightly to provide a key for subsequent K Rend finishes or floated smooth and sponged ready for K Rend Thin Coat renders. HP12 Base can be used in some instances as part of a waterproofing system. It has been used as a backing coat for swimming pools, and in house tests show excellent resistance to chlorinated water. Specialist technical advice must always be sought prior to use in this type of application. Due to its outstanding adhesion K Rend HP12 Base coat also makes an excellent stipple or scud coat.

APPLICATION

• For hand application, add 5-6 litres of clean water per 25kg sack

• Using drill and paddle or drum mixer, mix for 5 minutes, rest for 5 minutes then mix for a further 3-5 minutes mins to ensure dispersion of all additives • Apply by hawk and trowel

• If the next coat is to be a K Rend finish form a light key by scratching as per good render practice

• Alternatively float to a flat finish

• For application through electric or diesel plastering machines, the optimal settings should be checked with Kilwaughter Minerals Ltd prior to mixing. As Bedding Insulation Adhesive

• Mix as above.

• Apply by hawk and trowel to insulation board in a continuous line around the perimeter and additional dabs in the centre; at least 50% of the board should be covered.

• Alternatively apply with a notched trowel over the entire face of the board. Press the boards firmly onto the masonry substrate.

Coverage:

1.8kg / mm thick / m2

Powder Requirements:

8-11kg/m2 approx. nominal4 - 6 mm thickness