Product Description

EVERBUILD BUTYL GLAZING COMPOUND is a hand applied semi-setting glazing compound for use in bead or channel glazing where limited structural or thermal movement is present.

Benefits

        - Elastic formulation - moves with the frame.

        - Easier to apply than most competitive putties.

        - Extended shelf life

        - Added plasticiser improves adhesion and helps prevent cracking.

Areas For Use

        - Suitable for use with laminated/heat absorbing glass.

        - Bedding insulated glass units.

        - Glazing greenhouses (metal and timber).

Limitations

        - Unsuitable for plastic frames, or frames treated with decorative microporous stains. Always mix contents of pack thoroughly to blend in any surface oil. Do not overpaint until a surface skin has formed (minimum 7 days, maximum 30 days).

        - Do not apply below 4°.

        - Do not use in combination with metal casement putties to face glaze insulated glass units. Oil

        - migration will result in poor performance of both products and will bring about subsequent

        - failure.

Surface Preparation

        - All surfaces must be clean, dry, and free from dust, grease and other contamination.

PRIMING

Painted steel frames may be glazed without any further preparation. Galvanised frames must be passivated or allowed to weather naturally prior to glazing. Check that suitable primers (Calcium plumbate, zinc chromate) have hardened sufficiently by gently wiping with white spirits. All timber frames and beading must be sealed two coats of impervious timber sealer prior to glazing. Failure to carry out this step will result in oil/plastisizer migration, shrinkage, water ingress and subsequent breakdown of the units.

Application

GLAZING

All glazing should be carried out by the methods outlined in BS6262:2005 and BS8000-7: 1990. Double glazed units must be taped with impervious tape (e.g. aluminium) prior to glazing to prevent any possible reaction with the wide variety of edge sealant formulations currently being used. Setting and location blocks must be used. The use of distance pieces to give a minimum compound thickness of 3mm is essential. Greater depths may be required in exposed conditions to ensure durability. The channel around the glass must be filled to ensure no air voids remain

OUTSIDE GLAZING

1. Clean the rebates and beads and seal both with two coats of an impervious timber sealer.
2. Clean the perimeter of the glass and apply impervious tape.
3. Apply back bed of EVERBUILD BUTYL GLAZING COMPOUND to the rebate.
4. Insert setting blocks and distance pieces as required and insert the unit, pressing until it is firmly located.
5. Insert location blocks.
6. Apply EVERBUILD SILICONE 450 around the edge of the unit to completely fill the perimeter void.
7. Apply further SILICONE 450 around the edge of the unit to form a bed between the bead and the glass.
8. Insert distance pieces of the required thickness
9. Bed the bead firmly into the glass, squeezing the sealant up between the bead and the glass until the distance pieces are firmly held between the bead and the glass.
10. Fix the beads into position with sufficient permanent fixings to stop distortion.
11. Apply further SILICONE 450 to fill the space between the bead and the glass.
12. Tool sealant to a chamfer to shed water, lipping onto the edge of the bead.
13. Trim the back bedding of BUTYL GLAZING COMPOUND and finish to a chamfer to shed water.

GLAZING INTERNALLY

Use the same method as above, but in reverse. Bed the unit in SILICONE 450 and fix the beading in

BUTYL GLAZING COMPOUND.

OVERPAINTING

Product service life and performance may be improved by overpainting with oil-based undercoat and gloss. This is not necessary in all cases.

MAINTENANCE

        - Maintenance is essential for long term performance of the putty. Check periodically for defects and make good any repairs.

Specific Data

        - Appearance: Thick buff or teak paste.

        - Specific Gravity @ 20°: 2.0 gcm3 (approx)

        - Movement Accommodation: Moderate, but greater than conventional putties.

        - Oil / Rubber Content: 12% min

        - Application Temperature: 5° to 30°.

        - Drying Time: Overpaint when skin has formed, between 7 and 28 days after glazing.

        - Service Temperature: -30 to 50°.

        - Service Life: Up to 15 years when applied according to the methods outlined inBS6262 (1982) and BS8000: Part 7 (1990).

        - Coverage: For bedding, usage will be approx 3 meters per kg depending on rebate dimensions and frame type.

Health & Safety

        - Consult MSDS for full list of hazards.

Storage

        - Store at moderate temperatures. Product will stiffen at low temperatures.