Cutting deck into a semi-circle

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Old 03-08-16, 02:20 PM
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Cutting deck into a semi-circle

Hi Everyone.

My deck currently is cut into a semi circle for my pool. However I want to get a larger pool this spring and have to make the diameter about 2 feet larger. What kind of saw would you think would be best or anything other tips. I am not very handy so please be as detailed as possible about blades, saws, method etc.

Essentially my deck currently looks like this (

I just need it to be slightly larger to accommodate a larger pool
 
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Old 03-08-16, 02:46 PM
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You'll need to crawl under the deck and look at the framing. You can't just enlarge the circle and leave the remaining decking unsupported. Your deck was framed to accommodate the radius that is there now. It might take a lot of work to modify it.
 
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Old 03-09-16, 08:56 AM
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Ah good point. Though, the deck is only like 8 inches off the ground. It is not at the top of the pool.
 
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Old 03-09-16, 01:20 PM
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The framing is still the same although I guess if you cut the wrong thing and it failed you wouldn't fall as far.
You may have to pull a few deck boards to get a better idea about what needs to change frame wise. You can get some info by just looking at where the nails/screws are.
 
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Old 03-09-16, 02:32 PM
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Thanks - what kind of saw would you recommend, circular saw? reciprocating? jig saw?
 
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Old 03-09-16, 03:05 PM
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First you have to get the framing right. Most of that would involve using a skil saw although a jig saw will be needed when you recut the deck boards to fit. A sawsall [reciprocating] is too hard to handle for any finish work, it's mainly for the demolition phase.
 
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Old 03-09-16, 03:23 PM
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rich, can you post a picture?
We can't suggest a lot until we know how it is built, but if it is built onto posts set into the ground you may have to remove a lot of the deck to make room to build new supports.

How old is the deck and what was it made out of? If it is 15 year old pressure treated it may be time to consider new wood anyway. If it is the newer synthetic material, worth saving. The newer material might also be attached with screws allowing you to remove the boards easier, sometimes.

Bud
 
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Old 03-09-16, 03:34 PM
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Old 03-11-16, 07:30 AM
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See photos. I drew a line in blue chalk to show where I would need to cut. I took from 2 angles.


Name:  Deck 1.jpg
Views: 388
Size:  46.8 KBName:  Deck 2.jpg
Views: 402
Size:  32.8 KB
 
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Old 03-11-16, 08:23 AM
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So the deck sits directly on the gravel with no posts ?
You'd have to make the first cut [including 2x6] with a saws all but the rest would be done with jig saw. Once the excess material is removed you go back and add PT 2x6s as/where needed to support the end of the decking.
 
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