GB2067618A - Building-up Roof Covering from Glass Fibres and Resin - Google Patents

Abstract

Roof decking e.g. chipboard, is given a weather-proof covering by (1) applying resin thereto, (2) laying glass fibres onto the resin, (3) covering the glass fibres with further resin, (4) allowing the resin to cure, and (5) applying two further coats of resin, cure time being allowed between these applications. Glass-reinforced plastic roofs of this type are superior to conventional felt roofs in that the GRP is substantially immune to light- and UV-induced degradation and is absolutely bonded to the decking.

Description

SPECIFICATION Glass-fibre Flat Roofs Commence the job with clean, dry decking. The most ecconomical surface to use as decking is i inch chipboard on the joists.

1. First prepare the resin BIP864E, mixing in colouring agents white and black numbers 1 952 and 1 954 respectively as required. Use large container in order that the colour remains standard throughout.

2. Prepare 1- oz. Chop Strand Mat Glass (loosely woven material) M5 12-450-92 by cutting into pieces one metre square approximately. This has been found an easy size to cope with.

3. Pour out resin from mixing container into 'decorator's roller tray bowl'. Add catalysis RGS2 at 3%, mix with 7 inch paddle roller and apply resin to flat surface of decking, slightiy over one metre area of Glass.

4. Lay the Glass onto the fresh resin and roll in further resin until the Glass surface appears to gell'.

5. Then repeat with further sheets of Glass and quantities of resin until ail the horizontal area is covered satisfactorily.

6. Pre-manufacture 'L shaped' angled flashings using moulds, by the same process and fit into pre-cut channel in surrounding masonary as the job requires.

7. Finally once the whole job is covered prepare fresh resin in the usual way, and add liquid wax solution to 2% resin. Brush on one good coat over whole roof.

Notes:- A. All works to be carried out to usual building regulations and standards.

B. When working in ambient temperatures below 5C use accelerator to resin (not to catalysis as explosive) at 0.05% to achieve a good cure.

C. Where drips are required into gutters etc.

use battons to give correct throw.

D. Cover all areas where resin may drip carefully with polythene sheeting as viscosity of resin is low (near that of water).

E. If vertical work is required add powdered glass fillete to resin to increase viscosity.

Advantages Over Only Competitor That of Felt A. The anticipated life of this roof will exceed 25 years.

B. The cost approximately 25% dearer than felt.

C. Our GRP roof is designed as a weather-proof covering, the strength is by way of the decking and supporting joists.

D. The bonding of the GRP to the decking is absolute.

Claims

1. A method of preparing a weather-proof covering for a roof decking which comprises:- a) applying resin to the decking, laying glass fibres onto the said resin and covering the glass fibres with further resin, b) allowing the resin to cure, applying a further coat of resin, and c) allowing the further coat to cure and applying a final coat of resin.

2. The method of claim 1 wherein the decking is chipboard.

3. The method of claim 1 or claim 2 wherein the resin is pigmented grey.

4. The method of any of claims 1 to 3 wherein the glass fibres are applied as approximately one metre square sheets.

5. The method of any of claims 1 to 4 wherein 0.05% accelerator is added to the resin.

6. A method of preparing a glass reinforced plastic roof covering substantially as described herein.

**WARNING** end of DESC field may overlap start of CLMS **.

Claims (6)

**WARNING** start of CLMS field may overlap end of DESC **. SPECIFICATION Glass-fibre Flat Roofs Commence the job with clean, dry decking. The most ecconomical surface to use as decking is i inch chipboard on the joists.

1. First prepare the resin BIP864E, mixing in colouring agents white and black numbers 1 952 and 1 954 respectively as required. Use large container in order that the colour remains standard throughout.

2. Prepare 1- oz. Chop Strand Mat Glass (loosely woven material) M5 12-450-92 by cutting into pieces one metre square approximately. This has been found an easy size to cope with.

3. Pour out resin from mixing container into 'decorator's roller tray bowl'. Add catalysis RGS2 at 3%, mix with 7 inch paddle roller and apply resin to flat surface of decking, slightiy over one metre area of Glass.

4. Lay the Glass onto the fresh resin and roll in further resin until the Glass surface appears to gell'.

5. Then repeat with further sheets of Glass and quantities of resin until ail the horizontal area is covered satisfactorily.

6. A method of preparing a glass reinforced plastic roof covering substantially as described herein.

6. Pre-manufacture 'L shaped' angled flashings using moulds, by the same process and fit into pre-cut channel in surrounding masonary as the job requires.

7. Finally once the whole job is covered prepare fresh resin in the usual way, and add liquid wax solution to 2% resin. Brush on one good coat over whole roof.

Notes:- A. All works to be carried out to usual building regulations and standards.

B. When working in ambient temperatures below 5C use accelerator to resin (not to catalysis as explosive) at 0.05% to achieve a good cure.

C. Where drips are required into gutters etc.

use battons to give correct throw.

D. Cover all areas where resin may drip carefully with polythene sheeting as viscosity of resin is low (near that of water).

E. If vertical work is required add powdered glass fillete to resin to increase viscosity.

Advantages Over Only Competitor That of Felt A. The anticipated life of this roof will exceed 25 years.

B. The cost approximately 25% dearer than felt.

C. Our GRP roof is designed as a weather-proof covering, the strength is by way of the decking and supporting joists.

D. The bonding of the GRP to the decking is absolute.

Claims

1. A method of preparing a weather-proof covering for a roof decking which comprises:- a) applying resin to the decking, laying glass fibres onto the said resin and covering the glass fibres with further resin, b) allowing the resin to cure, applying a further coat of resin, and c) allowing the further coat to cure and applying a final coat of resin.

2. The method of claim 1 wherein the decking is chipboard.

3. The method of claim 1 or claim 2 wherein the resin is pigmented grey.

4. The method of any of claims 1 to 3 wherein the glass fibres are applied as approximately one metre square sheets.

5. The method of any of claims 1 to 4 wherein 0.05% accelerator is added to the resin.