NURMASTIC (Rubberized Bitumen Sealant) is a single component, ready to use bitumen sealant with selected grade of asphalt, high content of elastomeric rubber, fibres, mineral filler, anti-sagging agent and fast evaporating solvent. NURMASTIC can be used for sealing and waterproofing of joints, cracks, holes, etc. Once cured, NURMASTIC forms black flexible sealant with excellent adhesion to most of construction products.
Nurmastic is used in
*All values are subject to 5 - 10 % tolerance
1 Kg. of NURMASTIC will approximately fill the following lengths.
All surfaces should be free from loose debris, dirt and grease. NURMASTIC may be applied to surfaces which are dry or damp but not wet.
Joint depth must not exceed the width. Ideally the width should be twice the depth. In all cases joint width should not be less than 6 mm.
Maximum width recommend should not exceed 30 mm.
It is recommended to use bitumen primer to seal NURMASTIC under dusty conditions or on porous surfaces.
Stir the product thoroughly before use. Product will be ready for use.
NURMASTIC can be applied by trowel, putty knife, scraper or caulking gun. Voids and honeycombs should be repaired on the sides and bottoms of the joint before applying the primer.
If a good finish of joint is required, use masking tape before priming to cover the edges. Remove the tape immediately after applying the sealant.
Apply NURMASTIC into the joint firmly to ensure complete contact with the joint faces.
For filling joints in concrete pavements, it is recommended to leave the sealants a few minute below the pavement level.
Tools may be cleaned by using white spirit. Any spillage should be wiped off surfaces before the bitumen paint has set.