GRK Enterprises Ltd
Tel +44
(0)7980 468632, +44 (0) 7970 280408
+44 (0) 161799
7264
GRK Design,
supply, erect & low cost housing.
GRK houses are
built from SIP’s (structural insulation panels), sips are modern, high tech
panels which are manufactured from OSB (oriented strand fibre board) with a
central core of insulating foam, due to this unique construction GRK houses
offer high levels of sound, heat & cold insulation.
All GRK houses
include windows, doors, ground floor tilling & sanitary furniture, with
options for Kitchens & second floor covering (laminated flooring).
Due to GRK’s unique construction houses can be completed in as
little as 1 month from base level to finished house.
Houses can be
single or multi story, with very little limitation on interior or exterior
design, with a variety of exterior finishes.
GRK houses
offer a low cost rapid build solution to many housing requirements
Prices do not
include: -
Base and
ground work
Architectural
costs
Groundwork
These houses
are built from structural insulation panels (sip’s)giving a rapid build time and
excellent
sound, heat /
cold insulation, the panels are constructed from
oriented
strand board with a modified polyurethane foam, typical performance values are
:-
·
U value 0.285 W/sqm deg c
·
Sound insulation 52 dba
·
Fire rating 1 hour
The roof is
finished in red terracotta tiles
The
description above is a typical example, houses can be tailor made to suit
specific requirements and budgets.
Prices includes wiring,
plumbing, shower room with W/C and pedestal wash basin, Kitchen with work tops,
storage
cupboards sink and drainer, all floors (ground level) are tiled
WHY ARE SIPS SO MUCH
BETTER.
SIPS out perform other building methods in virtually every
category because the insulation is a component of a system, rather than an
addition. SIPS are a structural composite like an 'I'-beam. The two faces act
like the flanges and the rigid core is similar to the web. In short, the three components work together, rather than
against one another. This composite assembly yields stiffness, strength and
predictable responses. Not only do test results show panels are stronger, but
real life natural disasters have proven it time and again.
ARE SIPS NEW?
SIPS have been used and improved in the USA, Japan and Canada since
the 1950's, and are not a new untried method of building homes. SIPS have been
manufactured in the UK for several years
WHY ARE SIPS NOT MORE POPULAR?
Simply a lack
of awareness and the conservative nature of ' the UK building industry has held
back the introduction of SIPS. However, higher insulation standards driven by
the Building Regulations and the importance of sustainable building methods has
made people look to SIPS as the most economical method of meeting new
requirements. U-values~ as low as 0.10 W/m2K can be achieved in walls and roofs
using SIPS which means the system can easily meet the values expected to be set
in the new Building Regulations in 2005 and beyond.
WHY ARE SIPS
ENVIRONMENTALLY FRIENDLY?
SIPS buildings are energy efficient, strong, quiet and
draft free compared to older technology systems, like timber framing. Less air
movement or leakage translates into less drafts, fewer penetrations for noise,
lower energy bills and a significantly more comfortable and controllable indoor
environment. The result is lower energy consumption and COZ emissions.
Factory made with minimal site wastage and less landfill use.
OSB is made
from sustainable ie harvested spruce, thinning and managed plantations.
Up to 35% less
raw timber use in SIPS buildings.
HOW DO SIPS
REACT TO FIRE?
SIPS have
.passed every Standard fire test that is required.
A key element
of fire safety is protection of the SIPS and any other underlying structure
with thermal barriers like gypsum wallboard.
WHAT ARE THE OPTIONS FOR EXTERNAL FINISHES?
Almost total choice from bricks, natural stone, brick tiles, polymer and cement renders, timber cladding and metal cladding.
HOW DO
SIPS SAVE SO MUCH LABOUR?
SIPS are manufactured efficiently and to high quality and
accuracy in the factory. They are transported direct to site in much larger
dimensional sizes than other building materials. Erection is fast and easy
using the unique camlock or spine jointing systems that rigidly connects the
panels together. The building is weather proof faster and other subcontractors
can get a head start on the work that needs to be done.
WHO CAN DESIGN SIPS?
Professionals
are increasingly aware of SIPS and there should be no problem designing a building
from scratch to use SIPS or modifying an existing design.
IS PLANNING A PROBLEM WITH SIPS?
SIPS is an
accepted building technology and will not cause problems with planning
approval. In the same way a well detailed and engineered SIPS design will not
raise difficulties with building control.
ARE SIPS HOUSES COVERED BY WARRANTY SCHEMES?
All the companies offering warranty schemes accept SIPS construction. A
well-designed and constructed SIPS house should have a life expectancy equal to
present types of construction.
WHAT FOUNDATION SHOULD BE
USED?
Any construction can be used but the tolerance to level must be +/- 5mm to ensure the most efficient erection of the SIPS panels
.
WHAT IS THE BEST HEATING SYSTEM FOR A SIPS HOUSE?
Any conventional heating system can be used but should be down-sized
because SIPS houses are so energy efficient.
Standard
Technical data
The GRK SIPS
panels consist of two facings of 11mm OSB [oriented strand bored] bonded by pressure
injection CFC free/ODP zero polyurethane closed cell foam.
The outer
facing may be replaced with a cement particle board that will give improved
fire rating and allow direct application of render or paint systems.
Overall
thickness 100mm and 150mm
Wall heights
2400mm, 2700mm, 3000mm.
Roof panels up
to 6000mm
Other widths
and thicknesses are available on request.
The thermal
conductivity of the GRK polyurethane core is 0.025 W/sqm Using the GRK SIPS panel
can provide extremely low U-values for walls.
Depending on
detail of construction this can be in the ranges 0.21 to 0.14 W/sqm
For roofs
designs can deliver U-values in the ranges 0.20 to 0.12 W/sqm
GRK are happy
to give advice on specific designs.
The GRK SIPS
panel exceeds the Building Regulations requirements with regard to fire
resistance when lined with 12.5mm plasterboard.
Acoustics
insulation between rooms and externally is improved by the plasterboard lining.
GRK can advise on constructions to achieve high levels of sound reduction.
A building
constructed with GRK SIPS panels will have durability comparable to other forms
of construction. As long as the design follows best practice and the building
is maintained and weathertight, a life of at least 60 years may be expected.
Use of the GRK
SIPS panel and jointing system creates a very airtight structure with air
changes as low as 1 per hour.
GRK SIPS
panels have been independently tested for structural strength and meet British
Standards and Codes of Practice for Design.
146, Bolton Rd Worsley
Manchester Lancashire M28 3BW
Directors
P.S.Getliffe, J.I.Round
Registered in England
No 05175318