For well over ten years I have had the opportunity to work with GSF Construction on projects from modernizations to complex alteration and new construction involving phasing, difficult site conditions and tight time frames. In all cases GSF Construction exceeded my expectations and did so in ways that ensured the school’s schedule and budget goals were met…Once selected (unanimously) by the selection committee, GSF Construction set out to help us with the constructability review and cost estimating. With concern over the rising cost of steel and energy, and its impact on budget, GSF collaborated with the district and design team on cost savings including multiple subcontractors bidding to ensure the budget was met.
The composite basically consists of e-glass fibers and polyester resin that has excellent mouldability with several desired qualities such as lightweight, high strength, high stiffness, toughness, chemical resistance, electrical properties, aesthetic appeal, etc.
• Easy mouldability to architectural forms and shapes
• High strength to weight ratio
• Wide performance range
• Low manufacturing cost
• High resistance to impact
• Resistance to corrosion
• Good electrical characteristics
• Heat and sound insulation
• Translucency and color impregnation
• Properties of typical 4mm-12mm thick hand lay-up GRP laminate are:
• Glass content: 450gms/sg m/mm
• Impact strength: +40 to 45 KJ/sqm
• Tensile strength: +75 to 80 N/mm
• Density: 1.6 to 1.8 gms/cubic cm
• Bar of hardness: 45-50
• Pigmented gel coats: Ultra violet stabilized color fast, no fading.
• Fire properties (Surface spread of flame): Class 3 with general purpose resin as per BS476
Part 7, with special resins Class 1 can be achieved
• Architectural panels such as decorative column cladding, façade treatment, insulated, noninsulated
• Bath tubs, shower trays, wash basins, garden fountains
• Manhole liners, septic tanks, holding tank so Porta cabins, prefabricated houses, watchman
booth, vending kiosks, etc.
• Water tanks, A.C. covers, vanity tops
• Gold and silver jewels finals for mosques and domes
• Artificial rocks, garden planters
• Stadium canopies, electrical enclosures
Polyester is often referred to as fiberglass – which is not technically accurate. Fiberglass is
reinforcement and polyester is the resin.
Polyesters offer ease of handling, low cost, dimensional stability, as well as good mechanical,
chemical-resistance and electrical properties. Polyester resins are the least expensive of the
resin options, providing the most economical way to incorporate resin, filler and reinforcement.
They are the primary resin matrix used in SMC (sheet molding compounds) and BMC (bulk
Thermoset Polyester resins are created by combining an alcohol like ethylene glycol with an
organic acid like maleic anhydride.
The low viscosity and raw material cost of polyesters make the additions of filler and
reinforcements a matter of practicality. In fact, filler is often called an extender, because it
extends the value of the resin, reducing the cost of the final composite on as much as 50%.
It is possible to add or reduce strength with the reinforcement chosen. Other parts molded from
polyesters have similar properties if the glass reinforcements are similar. Polyester resin (neat)
meaning without filler or reinforcements would be a very brittle resin and would never be used
without fillers or reinforcements. "Buttons" are made from Polyester resins but do have fillers
and pigments, just no reinforcement as one example of a non-reinforced product.
WHAT OUR CLIENTS SAY
Very professional and technically competent job from the whole team.
Good regards for safety, completed additional works regarding decoration, clean up after works completed to a very high standard.