Karl Harrison Landscapes Ltd
Forum Replies Created
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Not quite where I was going with this, perhaps yes for a timber supplier, the thread was concerning the commercial installation.
Karl
Hi Paul
Great to see you at the show, good discussion point.
If you consider that most deck light fitting are dropped in from above the deck and the cables tracked underneath to junction boxes. It is also usual to have access panels near down pipes, inspection covers and for other items under the deck so best to have your connections in this location and you can then access these at any time.
In accordance with part P and the 17th edition, you are required to have access at all times to all electrical connections in any circuit.
In a normal surface fixed decking installation you would have to still take up a number of boards, not to lift the light out of the deck but to get to the connections. In all side fixed decking structures without a removable hatch you are then faced with the same issue.
I suppose on a deck that the designer or client doesnt want a hatch for any reason, perhaps a small section of fascia panel can be fixed as a removable panel and still provide good access to electrical connections.
We have had one project where the planters on the deck have a plinth that is removable for access, the electrical items were in there.
Hope this helps
Karl
What a beautiful timber, I would like to see a sample…
If anyone has detail of stability, durability and longevity as decking do let us know…
Thanks for this Roque 🙂
Karl
Hi Nigel
If you can mail me a pencil sketch of a side to show elevation and also a plan I can advise and provide a detailed drawing I can then assist with more answers.
In any cases the maximum clear span between the beams (supporting ends) for a C24 47 x 150 joist is 3.24m assuming 400mm centres. You can increase this to a maximum span of 3.47m if you used 300mm centres on your joists. Remember that your joists need to sail pass the supporting beam by 70mm. This construction will provide a 1.5kN live load for your decking.
Do consider that commercial decking installations do require a 4kN live load and also you are required to provide an 1100mm balustrade should the elevation difference be more than 600mm.
I love good causes
Karl
Per Ardva Ad Astra
perhaps Gary from Owatrol should mentionTropitech deck oil…
Hi Fahed
1. No special treatment necessary unless you require a different finish, although quality decking oil does enhance the longevity and aesthetic of your timber.
2. This is only really necessary for timbers with a high tannin content like Merbau. Post installation treatment would be the best choice as you can sand down the deck easier that hasn’t been pre-oiled.
3. Timber is best, softwood treated and certified C16 minimum or C24 is best unless you can afford hardwood.
4. KD would suit best in your environment, AD would contract soon after installation.
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hope this helps, feedback from other installers would also be of assistance here.
regards
Karl
Coverage : 8 to 12m²/l (Per coat) Coverage: 8 to 12m ² / l (Per coat)
 Multicoat coverage : 1 to 4m²/l Multicoat coverage: 1 to 4 m² / l
 Application tools : roller – brush – airless spray Application tools: Roller – brush – airless spray
 Application temperature : 5°C to +35°C Application temperature: 5 ° C to +35 ° C
 Drying : 24 h. Drying: 24 h.
 Setting up time before use : 1 to 3 hours. Setting up Time Before use: 1 to 3 days.
 Clean-up : White-spirit Clean-up: White spirit
This is the advice lable from Owatrol for D1 Pro, in our experience we normally would expect 5-7 sq m per litre.
I hope this helps
Karl
More and more main contractors are using specialist decking companies and we are seeing a massive rise in commercial decking. Composite out stripping timber by 2:1
This is a good year for higher quality products
Karl
Harriet
I am all for shorter lengths for the following reasons:
Reduced movement after installation (there is an increased rate of movement that is proportional to the length of timber)
looks more like an interior timber flooring.
Easy to handle, transportion costs are reduced.
Easier to install, bending 5.4m lengths of Ipe is not easy.
Makes the use of timber more efficient, less waste is a good thing these days…
Karl
I would recommend Prepdeck stripper by Owatrol (7 sqm /litre), let this product soak in and the lighty scrub – rinse with water
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Then neutralize with Net-trol (7 sq m/litre), again light scrub after soaking the entire deck, rinse with water
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Finaly let your deck dry completely and oil with Textrol (12 sq m/litre)Â for a soft wood or D1 Pro for a hardwood (5-7 sq m/litre).
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Let me know if you need any more info…
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You can buy these products hereÂ
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I wouldn’t be put off by the cost of logistics these days, with more and more users of the internet there is often no choice but to use them. Pallet Line offer competitive rates for national delivery with varying services from 3-5 days or even next day.
99% of our deliveries are with a courier and seldom have issues on cost…
Can you list some images or drawings of the pergola’s you are referring too, do include timber type.
cheers
Karl
Hi Jim
I would attend a show for networking or if we were exhibiting. I don’t have time for seminars – not saying there wrong just simply I don’t have time.
Location is Key, London shows tend to get busy and on the whole seem worth it.
Latest products, perhaps the internet is key here – there are many ways to see new products without going to a show.
When we exhibit, the best customers seem to be the ones that spend 15 seconds looking, ask for a brochure and thats it = a month or so later your specified. Where as customers that spend 15 minutes talking never seem to buy anything…
The event creators are also a factor, consider 100% design – this has now changed hands, its now run by the same company as grand designs; so this year many exhibitors have pulled out as the format has changed and so will the demographic of the attendees.
Great topic. Noggins, well… sometimes called blocking.
I take it the your “Span” refers to the joist not being supported except at either end. In this case there is nothing wrong with assisting the natural twist that you can quite often get. Its quite simply your choice and considering weight distribution I can’t see the effect making much difference. This said I am assuming that your beam span and joist span are correct for the size of timbers that you are using. It is advised that for clear spans over 2400mm the the use of noggins add to the stability of the structure, they would be placed in the centre of the span at the 1200mm point.
By using clean/fresh c16 – c24 certified timber joists the twist is reduced to that of aged timber in your not so used timber yards.
The treatment that he showed (I didn’t see the show) I can’t comment on as I don’t know the type of timber he was referring too or indeed that of which the timber was treated. All cuts for exterior softwood timber should have additional treatment applied to enhance the longevity of that peice of timber. Do consider, perhaps you are already aware, that the most exposed part of any timber is at the end grain where it has been cut.
Advice changes all of the time and do remember there are only guidelines/advice for timber decking and nothing in any regulations unless the deck is “part” of a new build. Or if you have consulted a structural Engineer for direction.
Karl
Convert it into English and then email to me, I shall then upload to the site files and provide you with a link to this post.
Once I have many data files I shall create a library under its own heading.
cheers
Karl
Roque Valente said:
hello, I have itauba in Portuguese and German fact sheet, how do I post that here?
Karl Harrison said:
Great reply Roque,
I am working on data sheets that will appear on this site under the menu heading “Decking Advice”, I would be greatful if you could mail me details for Itauba, I can then add to my list.
I do agree that hardness should not be the only consideration, we have to consider stability and durability. If and when using some of the species that are more volatile in terms of stability then more substantial fixings should be considered.
Karl
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