Rhodorsil Sea Line 100 Deck Caulking

[dweeze]

Is there anyone here who has used this to recaulk a teak deck. Am interested to know if its any good as I was under the impression that the 2 part polysulphides were the thing to use. Thanks

The blurb on their site says -

Description
RHODORSIL SEA LINE 100 is a neutral (alcoxy-type) one
component, odorless silicone elastomer, which is ready to use, and
designed for caulking decks and flexible bonding applications
requiring high mechanical properties.
It cures at room temperature and in the presence of air moisture, to
form a strong, flexible seal.
Silicone's chemistry is based on silicium. This mineral heritage
explains why silicone sealants are so good at withstanding severe
conditions such as prolonged exposure to UV's heat and cold, etc.

Particular Properties
RHODORSIL SEA LINE 100 provides outstanding, primerless
adhesion to teak and to all porous or fibrous surfaces.
It adheres to itself and to most surfaces used in marine construction :
polyester gel coat, stainless steel, rough and anodized aluminum,
metals, polycarbonates, painted surfaces (polyester, polyurethane
etc. paint), varnish and all other varnished surfaces, etc.
RHODORSIL SEA LINE 100 quickly polymerizes to form a seal that
can be sanded after at least 24 hours polymerization with equipment
that is normally used for wood. See deck caulking application
datasheet.
RHODORSIL SEA LINE 100 has a high modulus and outstanding
elasticity, as well as perfect resistance to UV : see table below.

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[pvb]

One-part silicone caulking used to be used (and perhaps is still used) by Hallberg-Rassy in production. I don't know whether your Hans Christian has silicone caulking, Tim, but if it does you need to use silicone to repair it as polysulphide won't stick to the teak unless you first clean it very thoroughly with solvent. Reason I know this is that I replaced some bits of missing caulk on my HR deck a year or so ago, using polysulphide, and it's all fallen out.

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[dweeze]

I figure that HR using it has to be a good advertisement. Interesting that polysulphide wont stick to it. The fellow that mentioned this stuff was from a sealant manufacturer here who made their own 2 part polysulphide. When I rang him he said that I'd be better off using the silicon base.

Sorry to hear yours has all fallen back out.

Ta for this.

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[Chris C]

Teak Deck Caulking

We have a Hallberg-Rassy 45 built in 1990. We had our teak decks replaced in2005. A few bits of the original silicone based caulking used by HR still exist in perfect condition on the toerail which was not replaced. The "new" caulking is Simsons made by Bostik and has completely broken down. The surface of the caulking has become powdery and every time we look there is a new sticky patch that needs to be removed and replaced. A report and photographs have been sent to Bostik and samples will be sent to them next week. The contractor who replaced the teak decks has said that caulking in the Mediterranean will only last 4-5 years. Not true if the right caulking is used such as the silicone based one recommended by Hallberg-Rassy. The price we have been quoted for re-caulking is Euros 120 per square meter.