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A curved Garden patio deck with pond - Near Portsmouth Hants.

The entire rear surrounding area of this house was decked - giving direct access to all main parts of the garden. It replaced an old patio, but was expanded into the garden. The new patio decking, included deck pathways, a curved deck around a pond and a small seating area in a quiet corner.

The curves around the pond presented a challenge for the deck had to overhang the curved pond at some points. The main problem with curved decks, is the 'fascia' trim after the deck is finished. This was accomplished by using a flexible fascia board.

The patio decking, and the extension into the garden proved to be a boon for the owners, and bought new life and interest in the garden - and of course good access to the pond!

 These images can be clicked for enlargement
Shaped garden decking path around conservatory area Balustrade to shaped deck The existing fish pond is catered for with some careful curves cut into the deck View of the curved deck around the pond area

The area was covered by old paving stone patio - which was taken up by the client prior to our start

The old patio paved area before the decking took its place

The patio area that we 'took over' before decking it over! With pond at far end of the proposed decked area. As can be seen in the image above, the sill doorstep threshold of the doorway is only slightly above the existing patio level.

Constructing a deck on top of the existing patio, would  have meant than the deck would have been above the level of the door - and damp proof course. The paving had to be removed in this instance. It was a bonus that the owner decided that he would like to keep the paving and pass it on to a relative. The owner decided that he would remove the old patio paving.




All paving stones had to be removed to allow for enough depth below DPC of the house
Image to the left,  shows the basic area and shape to be covered with decking. The existing pond can be seen at the far end. The paving has now been removed to allow a suitable working depth to use 6x2in (150 x 50mm) joists. The deck board is 1.5in thick. It was decided to use angles for the shape of the main deck areas, with curves cut out to re-shape the pond set in the decking. The images at the top of the page show the completed deck - with pond nicely merging into the new surroundings.




Deck joists laid out around perimeter of house and conservatoryJoisting completed using 150x50mm (6x2in) tanalised regularised joists.

The joists were set at 2ft (600mm) centres, with the ledger board pre-prepared with galvanised joist hangers before rawl-bolting into the house brickwork. This provides the main stability for the decking area and ensures that there is no 'creep' across the concrete - as would be the case over time with an un-fastened free-standing deck. After positioning of the joists into the joist hangers and fixings, the end plate for the deck was fastened. It is good practice to ensure that your sub deck matches the multiple widths of the deck boards that are to be used. In this instance, the deck boards are 150mm (6in) nominal finished width.

That is to say, that allowing for an 8-10mm gap, the finished width of the deck board will be 6in (150mm). So the sub deck should be constructed to a width of however many deckboards the width of the new deck will be. In this case 19 deck boards width = 9.5ft. (2.85m) at widest point. This ensures that - with careful deck-laying - there will be no need to slice down the length of a deckboard to make it fit. It is a good idea to start your deck at the furthest edge, which will then be a 'clean' and neat edge, and then make any adjustments and cut outs for drainpipes on the last board at the house.


Much of the area decked...

Basing decking fixed into the sub deck frame
At the furthest angle of the deck, it can be seen that the fascia boards have been fixed. This is simply a deckboard, which at a width of 6in, neatly fits in to the overall depth of the deck and joisting framework. A slight cut down into the turf hides the bottom of the deck - ensuring that the fascia is not in contact with the soil.


Trimming of edges, fascias etc to finish off.


Deck boards laid with overhang to edge of deckframe - allowing for cutting off after completion

The edges of the deck are allowed to overlap at the angle - rather than trying to cut the fascia edge angles as you lay. You will need to cut any angles from the deckboards that are to be butted against any bay window or angled conservatory wall of course. Then when finished, a simply cut with a good power tool will give a nice clean edge. Make to cut a few mm out from the endplate, to ensure that the cutting tool does not foul any metal fixings!



Looking back towards house....

Shaped decking showing the curves around the fishpond
Cutting in around the pond was carried out after firstly overlapping the deckboards on to the pond area. A jigsaw was then used to cut the curves. When doing this type of informal shape, extra care has to be taken with the joisting - for example to ensure that you have enough joist overhang to enable the irregular shape of the deck to materialise. The joists can be cut back to shape at the same time as the decking is shaped. However, this gives a problem with a suitable fascia. In this case, pond plants were envisaged to hide the edge of the 'open' deck. 


Back to main Patio decking page for more examples of decked patios.


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