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ERF Landscapes Ltd

Garden Decking Designed and Built

Timber decking has become a very popular medium within contemporary garden design. Timber is a great material to help in overcoming level changes and ground imperfections in the garden. Decking is also very popular for roof terraces probably because its weight is so much lower than paving and looks smart and clean.

High Quality Materials

The use of materials such as wood, stone and metal within garden design allows garden designers to experiment more with textures, surfaces and colours.

There are many different types of wood that lend themselves to a decking project. Whether it is a softwood or a hardwood you desire we can accomodate. Please ask us if you have a particular wood or finish in mind and we will be happy to advise you.

Exacting Standards of Construction

ERF Lanscaping Ltd usually build decking in the following way. Of course, this may alter according to each particular project? On the whole, this method is the tried and tested method and conforms to current construction standards. The most important part of the decking is the framework on which the decking sits.

Foundation Posts

These are the main supports for the decking and will absorb all the load bearing from the decking boards laid above. Treated posts 100mm x 100mm (4") are fully concreted into the ground and cut to the required height and sealed at the cut surface with a suitable preservative in order to seal the cut surface. In some situations the posts are not necessary; roof terraces and over hard surfaces. In these cases the joists will sit directly on to plastic packers, or similar method, to allow for air circulation.

Main Bearers or Beams

The beams of a deck are the intermediate structural members. They transfer the dead loads of the joists. Generally, ERF Lanscaping Ltd use 100mm x 100mm (4") treated softwood timber, which rests directly onto the posts. This is most important as it is vital to transfer the load to the support posts, which provide the best compressive resistance. The most common fixings used are galvanised nails or protected coated bolts.

Fully Treated Timber Joists

Joists are normally 100mm x 50mm (4" x 2"), fully treated softwood timber. The decking boards rest on the joists and the joists transfer weight to the beams and posts. The spacing of the joists depends on the span capability, which in turn is determined by the dimension of the decked area. Typical joist spacing methods range from 450mm 600mm (24" joists). Joists are fixed to the beams using galvanised 100mm (4") nails or stainless steel screws.

Deck Boards

Decking (deck boards) the actual upper surface which is visible, comes in a variety of different timbers both hard and soft woods and sizes. Decking provides an attractive and versatile surface suited for general use ie. walking and standing on. Deck boards are available in various widths such as 19mm x 95mm and 145mm x 21mm. Different widths and sizes are subject to the clients and designer's specification and requirements.

Deck board profiles are usually a smooth pencil round finish. Grooved deck boards are available but are used far less due to the ridged appearance. Sometimes clients ask for the grooved decking as it is believed to be slip resistant but we have not found this to be the case.

Stainless Steel or Galvanised Fixings

The majority of decking is fixed into place using stainless steel screws. When installing a hard wood deck our usual practice is to pre-drill the area, prior to fixing with screws, to avoid possible splitting of the decking. Galvanised lost head ring shank nails can be used on softwood timber, subject to specification. All deck boards should have a slight gap between them to allow for natural expansion, usually 2-3mm.

Anti Weed Textile Membrane

ERF Lanscaping Ltd always install a geo textile membrane where a deck is mounted over open ground to prevent the growth of perennial weeds through the subframe.

A happy customer

Our customer in Welwyn Garden City wanted a garden his family could enjoy.

The design incorporated a raised patio area leading down to a large lawn and a small decked area.

Excavation starts on the patio area

Once the patio area was excavated we laid the wooden beams to stabilise the ground levels for the paved area.

The finished decking area

The completed paved area was surrounded with new railway sleepers. We then levelled and prepared the ground for the new lawn.

The finished patio area

Our customer was very happy with the final result and his children rapidly turned the lawn into West Ham's new pitch.

If you have a similar requirement and would like to discuss it with us then please contact us.

No job is too big or too small and we take pride in the fact that all our work is completed to the same exacting standard.

ERF Landscapes Ltd - Based in Stevenage, Hertfordshire - Company No. 4740707 - Established 2003

t: 01438 238 631 - m: 07771 934 652 - e: info@hertfordshirelandscaping.co.uk

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