Looking for a mattress barrier to reduce unwanted moisture.

DayBreak

I am considering the purchase of a mattress moisture barrier for our C-Dory. I was thinking of using Hypervent www.hyperventonline.com/ I am curious what others are using as a moisture barrier under the forward cabin mattress. Thanks for your reply. Gary and Colleen

srbaum · Posted: Sun Jul 16, 2023 6:35 am Post subject:

Gary,
That system works well, I had it on a previous boat and never an issue with moisture. My present 26 has a different system, which also works well, but there are more bit parts to mess with. https://defender.com/en_us/froli-sleep-systems

thataway · Posted: Sun Jul 16, 2023 12:18 pm Post subject:

I have used "Dry Deck" type tiles and vinyl pool deck mat (Spaghetti Mat) from American pool mats. The Hypervent is a good system, as is the Froli system.

BIG Floors has outdoor plastic tiles for $ 2.50 a square foot on up. Under the mattress the more rigid decking is fine. I have used this type on the hull inside the various locker floors for ventilation and they work well.

colbysmith · Posted: Sun Jul 16, 2023 7:52 pm Post subject:

I have been very happy with the Hypervent. Colby

JamesTXSD · Posted: Sun Jul 16, 2023 9:20 pm Post subject:

We used the Hypervent under the V-berth pads on Wild Blue - it really made a difference. We also put a foam pad that we bought at Walmart that was marketed as a "pool floatie" - about 1/2" thick and about 3 1/2' x 6' rectangle - along the hull. Sliced that pad in half and slid that alongside the v-berth pad. It provided insulation and seemed to help with condensation when boating in chilly climates. Also, if your hind end poked out of the covers and touched the inside of the hull area, it wasn't such a cold shock. Shocked

Hunkydory · Posted: Mon Jul 17, 2023 8:45 pm Post subject:

Agree with the others on Hypervent

DayBreak · Posted: Wed Jul 19, 2023 1:02 pm Post subject:

Just ordered 12 linear ft. of Hypervent. Thanks everyone for your help, suggestions and comments. Gary

rogerbum · Posted: Wed Jul 19, 2023 4:27 pm Post subject:

Good choice on the hypervent. I used that on our Tomcat. I also put some active ventilation in. In brief, I cut two holes in the berth deck. These are about 4" in diameter and are towards the bow. They are covered with round stainless steel grates. Then on the aft end of the berth platform (where it turns 90 degrees and there is the vertical face, I cut a hole in there. Just behind that hole, I mounted a duct booster fan. This is a fan that is intended to be installed in a home duct to increase flow. I put that behind a grate and the fan blows out into the cabin. It is switched off of my 120V shore power system. When it's running, it pulls air through the two vents that are under the mattress (pulling through the hyper vent) and exhausts that back into the cabin. E.g. it circulates air under the mattress and under the berth platform. I leave it running whenever I'm attached to shore power (which is 95+% of the time). That fan has been running fine for 8+ years now and does a good job of keeping things circulating in those areas.