Description:

A heavily filled and fibrated bituminous compound that dries to a soft flexible black coating which remains soft

and pliable for a long time after application.

Uses

Bond It TROWEL MASTIC is a multi-purpose trowel grade material

for waterproofing, stopping, bedding, pointing and sealing.

TROWEL MASTIC can be applied to mastic asphalt, roofing felt,

corrugated iron, cast iron, fibre cement, slates, lead, copper, zinc,

concrete and timber.

Preparation

All surfaces must be structurally sound, clean, dry and free from

surface contaminants such as grease, rust and dirt. If

necessary, remove any organic growth i.e.

lichen, with a fungicidal wash such as Bond

It MOULD STOP. If the surface is

still dusty after cleaning, or

covered with weathered

bitumen, prime with BITUMEN

PRIMER and allow to dry.

To assist application in cold

weather store the material in a warm room overnight prior to use.

Application

Apply with a steel trowel or putty knife.

Cracks & holes: Force the compound into the crack leaving slightly

proud at the centre. For large cracks and holes apply the

compound over the area to be treated and embed a closely woven

glass fibre membrane into the compound to overlap the crack or

hole by approximately 50mm. Allow to dry and then apply a

second coat fully covering the reinforcing membrane.

Corrugated iron/fibre cement sheeting: Tighten loose hook bolt

and trowel around with TROWEL MASTIC. Remove loose screws

then re-bed both screws and washers in TROWEL MASTIC and

tighten. Top seal and trowel to a smooth finish. If a sheet is

cracked clean, prime and apply a bandage strip of woven glass

membrane embedded in TROWEL MASTIC. Allow to dry and then

overcoat. Where required use the same technique to seal side and

end laps in corrugated sheeting.

Tiles: Use TROWEL MASTIC to point up butt ends of ridge tiles,

fillets and slates.

Lead and zinc: Trowel over cracks and pinholes, where necessary

reinforce with a woven glass fibre membrane embedded in

TROWEL MASTIC and overcoat.

Felt: Re-adhere loose felt (especially flashings and details) and seal

joints with TROWEL MASTIC. Note: this material should only be

applied to surfaces that are completely dry and great care should

be taken to ensure that when applied to bitumen felt no moisture

is contained within the felt.

Drying Time

Most of the solvent evaporates in 24 hours under average drying

conditions, but the coating remains soft for many months.

Limitations

• Do not use in areas where subsequent solvent contact

is likely.

• Do not use for potable drinking water tanks.

• Allow sufficient drying time between coats.

• Bitumen paint may bleed through any paints

subsequently applied over it. Apply a primer

recommended by the paint manufacturer before

overpainting.

Colour

Black in colour.

Container Size

1/2.5/5L metal tins.

Cleaning Of Tools

Clean with paraffin (kerosene) or Bond It WHITE SPIRIT.

Storage Life

Minimum of 5 years from date of manufacture under good storage

conditions in original unopened containers.

Storage Conditions

Store under cover away from sources of heat and ignition. Keep

containers sealed when not in use.

Disposal of Containers

Do not leave containers on site where residue could be a hazard to

children, animals or the environment. Replace lids securely and

remove any containers to a central disposal point.

Health & Safety

Please refer to separate material safety data sheet for full

handling, use and storage instructions. Keep out of reach of

children. It is the users responsibility to determine suitability

for use. If in doubt contact our Technical Department for

advice.

Note: 

this information is for general guidance only, since site

conditions and labour are beyond our control. It is recommended that

users make their own tests to determine suitability.

Specification Summary

Type of Solvent White spirit, gas oil

Approximate Flashpoint Test Method BS2000:Part 170:1982 [IP170/75 (81)] 40oC

Approximate Specific Gravity 1.45

Approximate Coverage 2m2 per litre (giving

2mm wet thickness)

Service Temperature Limits -10oC to +85oC depending on

operating conditions

Application Temperature Limits Normally 5oC to 30oC

Chemical Resistance Resistant to: most salt solutions, some dilute acids and

alkalis, water and alcohol

Not resistant to: oils, solvents some detergent solutions

Heat Flow Resistance The cured film will not sag or flow under normal conditions

UN Number 1263

UFI 5450-Q03A-700N-RJS5

Product Details:

Size: 1/2.5/5 Litres

Colour: Black

Package Content:

1x Bond It Trowel Mastic Fibre Filled Bitumen Paint Roof Repair Compound Seal

Choose Sizes:

1/2.5/5L