TECHWOOD HARMONY DECKING Maintenance manual

Derrinabrin Farm, Norwood Hill Road, Charlwood, Surrey,RH6 0EB, UK
0800 799 9082 | [email protected] | www.teckwood.co.uk
Congratulations on the purchase of your Teckwood Harmony Co Extruded Class B Fire Rated dual
sided composite decking board. To ensure that you keep your low maintenance eco friendly decking
looking at its best we recommend that you follow a few easy guidelines.
For periodic cleaning use a soft bristle brush and a dilution of mild soap and warm water. For those
using a power washer we recommend that you stand at least one metre way from the area you are
to clean. Spray in the direction of the grain to avoid damaging the decking. Always follow the safety
precautions when operating a power washer. Ensure that the water effectively drains from your
capped wood plastic composite decking.
Teckwood’s fire rated decking meets the requirements of European Standard EN 13501-1, to
Euroclass B. It is also a better sustainable choice for the environment and may be a
contributing factor in stopping small isolated fires from being a destructive force on
domestic and commercial properties.
Always check with your local building code authority to confirm the decking fire requirements in your
location, and even if the building codes do not require it, you might want the peace of mind that
comes with knowing your home is that much more protected if the unthinkable happens.
These guidelines may not cover every maintenance scenario. If you have any additional questions
please contact our friendly service team on 0800 799 9082.
HARMONY CLASS B FIRE RATED DECKING INSTALLATION MANUAL
CARE AND MAINTENANCE

Derrinabrin Farm, Norwood Hill Road, Charlwood, Surrey,RH6 0EB, UK
0800 799 9082 | [email protected] | www.teckwood.co.uk
INITIAL HINTS AND TIPS FOR INSTALLING HARMONY DECKING
NOTE: WHEN SCREWING THROUGH COMPOSITE PRODUCTS ALWAYS PRE DRILL ANY HOLES
Joists must be laid on a solid flat
surface such as concrete. Grass,
uneven paving slabs or sand will
cause movement.
Always pre drill composite wood
products using a minimum of
a 4.5mm drill bit. If you do not
you risk damaging the product
over time.
Ends of deck boards must be
supported and not have an
overhang of more than 10mm.
If not boards will move or be
damaged.
Butted boards must have an
expansion gap of 5mm between
boards & be supported by
separate joists. At edges a gap
must be left for expansion. If
not boards may warp or crack
under pressure.
Joists must be set to 350 mm
centres. If not boards may warp
or move. Composite boards
need to be supported across
their length.
All decking must be laid with a fall. We recommend that you lay your decking with a fall of 1 in 100.

Derrinabrin Farm, Norwood Hill Road, Charlwood, Surrey,RH6 0EB, UK
0800 799 9082 | [email protected] | www.teckwood.co.uk
INITIAL HINTS AND TIPS FOR INSTALLING HARMONY DECKING
IMPORTANT NOTE:
When designing your deck please make note of the joist spacing in your frame. Composite wood behaves differently
to traditional timber, hence for different spacings that you may be used to.
1. Lay your Joists 350mm centre to centre, running the
opposite way to the direction of the Deck Boards.
Make sure to leave a 20mm gap between your walls /
fence to allow for expansion.
2. Pre-drill and screw the Joists to your concrete base.
(If using Composite Joists pre-drill & over-drill holes
to allow for expansion. Use of expansion screws are
recommended). See Figure A.
3. Fix Starter Clips along the edge of each Joists at the
end you wish to start laying boards from. Pre-drill the
screw holes & screw in place. See Figure B.
4. Push your rst board into place, clipping into the Starter
Clips
5. Clip Concealed Fixing Clips into the rst board along
each of the Joists. Pre-drill and screw in place. See
Figure C. Space between boards should be 5mm.
6. If joining 2 lengths of board together, make sure both
ends are supported by separate Joists. Leave a gap
calculated on the expansion rate of 0.3%-0.5% of the
board length to allow for expansion. See Figure D.
7. Push the next board in place. Repeat until your deck is
the required length.
8. Measure out the width of the last board and mark Joists
ready for Starter Clips to nish the deck. Pre-drill the
holes and screw Starter Clips in place.
9. Clip your last board into the
previous board and push
down into place using a
rubber mallet if required.
See Figure F.
Overhang
Overhang of boards from joist
should not exceed 20mm.
Finishing L Trim For
Non Step / Non Walking Edge
Lay your nal joist with a 20mm
over hang to allow for expansion.
Screw the 90° angle directly into
the joist. If for a walkway or
doorway, use an aluminium L
shaped cover from your local DIY
store to hide the gap.
Figure F
Figure E

Derrinabrin Farm, Norwood Hill Road, Charlwood, Surrey,RH6 0EB, UK
0800 799 9082 | [email protected] | www.teckwood.co.uk
INITIAL HINTS AND TIPS FOR INSTALLING HARMONY DECKING
DISCLAIMER
The information given in this guide is based on guidelines for installation of domestic properties.This
guidance does not cover any guidance for commercial decks as they require a more robust design, materials
and construction that can deal with loads placed on them. This is just a general guide, it may not cover
every scenario envisaged. It will be the sole responsibility of the installer for the installation methods they
use and its performance as every installation differs and could be unique. Teckwood recommends that
all designs should be reviewed by a licensed architect or engineer before installation, and that every plan
or design meets that building regulations and permission before the beginning installations. Please use
suitably qualified personnel to prevent injuries or accidents.
COLOUR EXPECTANCY
Due to sun bleach, Teckwood composite products are subject to fade, as our composite wood is manmade
and a recycled product, thus color variations are expected. Our warranty does not cover color fade,
water marks or discoloration or stains on our products. Our deliveries colour variations may occur in
different batches.
STEP FINISHING SECTION