Ecological
Building. Concern
is growing over the environmental impact of many modern products. There is now
an awareness of issues such as tropical deforestation and 'Sick Building Syndrome'.
Concern about indoor pollution and allergies is particularly high. In terms of
energy and toxicity, buildings and construction are amongst the most wasteful
and polluting areas of modern life. This situation can be changed and Natural
Building Products are part of the solution.
Earth
Products. These
are suitable for historic building repairs and for new building applications.
They are extremely low energy materials, from sustainable resources and are entirely
healthy. They are eminently suitable for "breathing" constructions.
Earth products are easy and pleasant to use and are capable of creating a stunning
appearance. They are durable and easily maintained.
Insulation
Products. These
are suitable for all types of buildings, but particularly for breathing constructions
where control of moisture is necessary. For this reason they are indispensable
in the renovation of historic buildings.
Clay
Board
Made of
clay, reed and hessian. It is a practical alternative to plasterboard or lath
and plaster and is compatible with clay or lime plasters. Clay products help to
regulate temperature and moisture and provide acoustic insulation.Click
here for technical sheet.
| QUANTITY |
PRICE |
| BD
20mm x 1500 x 625 |
£29.82
|
| BD
25mm x 1500 x 625 |
£34.06
|
Claytec
Plasters - General
These are a blend of clay, fine aggregate and plant fibres. They are supplied
as dry powders in bags or as "green" or wet mixes in 1 tonne or 1.2 tonne bags.
They have an indefinite shelflife whilst dry and are mixed with clean water for
use. They harden by drying and, as no chemical reaction takes place, they remain
workable for a lengthy period and can be re-worked by the addition of water. They
can be used internally on masonry, clayboards, lime plasters and plasterboard
and offer a practical alternative to gypsum plasters. The self-coloured plasters
provide a high quality non-dusting surface without the need for further decoration.
Clay
plaster Topcoat
Click
here for Claytec technical sheet.
| QUANTITY |
PRICE |
| Claytec
top coat 30kg |
£27.34
|
Claytec
Undercoat
Click
here for technical sheet.
| QUANTITY |
PRICE |
| 30kg |
£19.78
|
| 1200kg
Wet |
£344.55
|
Wemico
R131 Glass Fibre Mesh
for
reinforcing plasters.
| QUANTITY |
PRICE |
| 50m
x 1m Roll | £70.86 |
LECA
Light Expanded
Clay Aggregate is ideal for use as an insulating sub-base beneath ground floors
or as a light weight aggregate in slabs. It consists of lightweight, porous, ceramic
granules formed by expanding special clays at high temperatures. In bulk, the
coated version of LECA is free-draining and has negative capillary action, good
load-bearing properties and good thermal qualities (k = 0.11 w/mk).
Click
here for technical sheet.
| | 50
litre bags | 1.2
cu. metre bags |
|
| PRICE | WEIGHT
as guide only | PRICE |
Weight as guide
only |
| LECA
Mix 20 - 0mm | £5.77 | 27
kg | £72.00
| 570
kg |
| LECA
Mix 20 - 10mm | £5.77 | 27
kg | £76.00
| 500
kg |
| Coated
LECA 20 - 10mm | £6.50 | 27
kg | £76.00
| 500
kg |
Bulk
discounts are available for full pallets of 50 litre bags (21 bags / pallet) or
10+ bags of the 1.2 cu.m size. All prices are plus carriage, although the 50 litre
bags are available ex-works.
Sheepswool
Click to view larger image | 
Click to view larger image |
Produced
in the UK, sheepswool batts natural insulation come in a range
of sizes. They are sustainable, safe and have a high insulation
valve (k = 0.038 w/mk) and excellent moisture control without
loss of thermal efficiency. They have low embodied energy and
are not toxic or irritating in use. Cost per m2 at 100mm is about
£9.50 plus carriage.
Click here for technical sheet.
If you would like help choosing between Thermafleece and PB20
please see the following comparison
chart
|
| BATT
DIMENSIONS | BATT
m² | BATTS
per PACK | PACK
m² | INDIVIDUAL
£ / BATT | m³
PACK |
|
50 x 400
x 1200 | 0.48 |
42 |
20.16 |
£3.50 |
£95.96 |
| 50
x 600 x 1200 | 0.72 |
28 |
20.16 |
£5.25 |
£95.96 |
| 75
x 400 x 1200 | 0.48 |
27 |
12.96 |
£5.25 |
£92.28 |
| 75
x 600 x 1200 | 0.72 |
18 |
12.96 |
£7.86 |
£92.28 |
| 100
x 400 x 1200 | 0.48 |
21 |
10.08 |
£6.88 |
£95.76 |
| 100
x 600 x 1200 | 0.72 |
14 |
10.08 |
£10.32 |
£95.76 |
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Sheepswool
- PB20
|
Thermafleece
PB20 is a wool-based building insulation incorporating a recycled
polyester bulking agent to enable the insulation to be rolled
and compressed by up to 60% whilst retaining many of the functional
and environmental benefits associated with wool fibres. PB20
has a thermal conductivity of 0.039 W/mK, which is compariable
with most equivalent conventional insulation. Cost per m2 at
100mm is about £7.70 plus carriage.
Click
here for the brochure
|
| BATT
DIMENSIONS | UNITS
per PACK | PACK
m² | PRICE
per m2 | PRICE
per PACK |
|
100 x 370
x 5300 | 3 |
5.88 |
£7.70 |
£45.28 |
| 100
x 570 x 5300 | 2 |
6.04 |
£7.70 |
£46.51 |
| 70
x 570 x 7600 | 2 |
8.66 |
£5.39 |
£46.68 |
Back
to the Index
Cellulose
insulation
Excel Warmcell
100 loose-fill cellulose fibre natural insulation is produced from 100% recycled
paper and has a high insulation value (k = 0.040 w/mk). It is non-toxic, non-irritant
and extremely easy to use. Our cellulose insulation has been treated with inorganic
salts to provide pest and fire resistance. It is specifically for use between
joists in lofts and under suspended floors. Cost per m2 at 100mm is about £5.06
plus carriage.
Click
here for Cellulose Fibre technical sheet.
| QUANTITY |
PRICE / BAG |
Cost
per m³ |
| 8kg |
£9.82
|
circa £49.10
|
Back
to the Index
Pavaflex
Flexible wood fibre insulation
A natural, breathable and flexible insulation
made from wood fibres and is treated with inorganic salts to provide fire and
pest resistance. Has a good insulation K value of 0.038 W/mK and a density of
55kg/m3. More carbon is locked up in Pavaflex than is released in production and
is therefore carbon neutral.
Click here for Pavaflex
natural insulation technical sheet
Thickness mm | Width mm | Sheets
per package | Sheets
per pallet | Weight
per pallet | m2
per pallet | m2
per batt | m2
per pack | £/m2 | £/pack |
|
50
mm | 375 | 8 | 120 | 182 | 60.75 | 0.506 | 4.05 |
£6.12
|
£24.80
|
50
mm | 575 | 8 | 80 | 186 | 62.10 | 0.776 | 6.21 |
£5.92
|
£36.76
|
80
mm | 375 | 5 | 75 | 182 | 37.97 | 0.506 | 2.53 |
£9.50
|
£24.05
|
80
mm | 575 | 5 | 50 | 186 | 38.81 | 0.776 | 3.88 |
£9.50
|
£36.87
|
100
mm | 375 | 4 | 30 | 182 | 30.38 | 0.506 | 2.03 |
£11.80
|
£23.90
|
100
mm | 575 | 4 | 40 | 186 | 31.05 | 0.776 | 3.11 |
£11.80
|
£36.64
|
140
mm | 375 | 3 | 36 | 155 | 18.23 | 0.506 | 1.52 |
£17.70
|
£26.88
|
140
mm | 575 | 3 | 24 | 158 | 18.63 | 0.776 | 2.33 |
£17.70
|
£41.22
|
Wood
Fibre Boards - General
Wood fibre boards are rigid building boards made from reprocessed offcuts with
added formaldehyde.
Pavadentro
Internal wall Board
|
DIMENSIONS
mm
|
PRICE
per board
|
Eq.
price per m2
|
|
60
x 1010 x 590 - 68 boards/pallet
|
£14.54
|
£24.23
|
|
80
x 1010 x 590 - 48 boards/pallet
|
£19.54
|
£32.57
|
|
100
x 1010 x 590 -40 boards/pallet
|
£24.12
|
£40.20
|
Pavatherm
Thermal Board
Used internally for thermal and acoustic natural insulation on floors walls and
ceilings. Made from wood pulp, no adhesives are used in the manufacturing process.
| DIMENSIONS
mm | PRICE |
| 20
x 1020 x 600 |
£3.55
|
| 30
x 1020 x 600 |
£5.17
|
| 40
x 1020 x 600 |
£6.91
|
| 60
x 1020 x 600 |
£10.31
|
| 80
x 1020 x 600 |
£13.90
|
| 90
x 1020 x 600 |
£16.14
|
| 100
x 1020 x 600 |
£17.94
|
| 80
x 2050 x 800 |
£36.65
|
| 40
x 2050 x 1200 |
£27.74
|
| 60
x 2050 x 1200 |
£41.40
|
Pavatherm
Profile (formally Floor NK)
| DIMENSIONS
mm | PRICE |
|
40
x 1010 x 590
|
£9.01
|
|
60
x 1010 x 590
|
£13.52
|
Isolair
Sarking Board
| DIMENSIONS
mm | PRICE |
|
22
x 2480 x 750
|
£20.04
|
|
35
x 2480 x 750
|
£32.86
|
|
60
x 2480 x 750
|
£55.72
|
External
Insulation Board - Unger diffutherm
These can be used against a solid background or over studs and joists when protected
with a lime or earth plaster.
| DIMENSIONS
mm | PRICE |
| |
£24.70
|
| |
£33.01
|
| |
£40.86
|
Pavatex
Self-Seal Tape
| DIMENSIONS
| PRICE |
| Roll
- 15cm x 15m |
£67.66
|
Reed
Board
Click to view larger image |
A natural
product that has many uses. Can be used to create an insulated
ceiling once lime plastered, or can be used to create stud walls
or can help insulate a solid wall internally. This product has
a reasonable K value of 0.54 w/mk.
Click
here for technical sheet
| 25 mm |
1000
x 2000 mm |
£15.50 |
|
50 mm
|
1000 x
2000 mm
|
£37.90
|
|
Glass
fibre scrim
For reinforcing plasters.
| QUANTITY |
PRICE |
| ROLL
-100m x 8cm | £16.53 |
Silver
Mica 175
| QUANTITY |
PRICE |
| 25kg |
£262.50 |
Cob
Blocks and Cob Bricks
|
TYPE |
NOMINAL
SIZE | PALLETTED
PRICE
collected from us | INDIVIDUAL
PRICE
per block |
| Extruded
cob block | 17.5"
x 8.5" x 4" | £1.45
in pallets of 50 | £1.50 |
| Compressed
cob block | 17.5"
x 9" x 4" | £1.80
in pallets of 50 | £1.90 |
| Compressed
cob brick | 8"
x 4" x 2.5" | - |
85p |
Oak
Lintels
We stock are wide range of seasoned oak lintels that have been
air dried for up to 8 years. Standard sizes are 4" x3", 6" x 4", 8" x 5" and 12"
x 5" in a variety of lengths up to 7ft. We can also supply green oak cut to your
specific requirements.
Formula to calculate volume:- (inches
x inches) x length (feet) / 144 = volume in cu. ft
| QUANTITY |
STANDARD
PRICE |
| per
cubic foot | £30.00 |
Riven
and Sawn Lath
Click to view larger image |
We stock over 100,000 feet of lath and battens. Riven/hand split lath is cut with
the grain and is less flexible than sawn lath and offers a coarser surface for
lime plasters to adhere to, making it more suitable for ceiling repairs. The key
to the riven surface is then an additional grip to that formed by squeezing the
lime plaster through the gaps between the laths. Riven Chestnut lath is a little
more flexible than riven oak lath and can therefore be used for following contours
or undulations a little better if needed. Sawn
larch lath is a good quality wood that is the most flexible, particularly useful
for longer lengths that need to follow old walls that have 'charactor'.
| | RIVEN
OAK | RIVEN
CHESTNUT | SAWN
OAK | SAWN
LARCH | | price,
per foot | 27p |
27p |
10p |
7p |
|
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