Why a 1/4" gap at the bottom of the hatch?

Anything to do with mechanical, construction etc

Why a 1/4" gap at the bottom of the hatch?

Postby kayakrguy » Fri Sep 29, 2006 7:26 am


I realize there is a need for a 1/4 inch gap at the top of the hatch for the hinge to be able to swing without binding.

What is the purpose of the gap at the bottom that some people put in?
I'ms not clear about that.


A disposition to preserve, and an ability to improve, taken together, would be my standard of a statesman...

But what is liberty without wisdom, and without virtue? It is the greatest of all possible evils; for it is folly, vice, and madness, without tuition or restraint.

Edmund Burke
User avatar
Lifetime member
Posts: 917
Images: 195
Joined: Sun Feb 05, 2006 8:26 pm
Location: Jersey Shore

Postby halfdome, Danny » Fri Sep 29, 2006 10:02 am

"Conditions are never just right. People who delay action until all factors are favorable do nothing". William Feather
Don't accept "It's Good Enough" build to the best of your abilities.
Teardroppers Of Oregon & WashingtonImage
User avatar
halfdome, Danny
*Happy Camper
Posts: 5473
Images: 170
Joined: Sun Aug 14, 2005 11:02 pm
Location: Washington , Pew-al-up

Postby Steve Frederick » Fri Sep 29, 2006 10:49 am

halfdome, Danny wrote:Weatherstripping

Yeah! Use a seal that is a bit thicker than that gap, say 3/8", so that it compresses when the hatch is closed. Try to get closed cell foam, or rubber, it resists water penetration. Open cell foam will leak!
Blessings, Steve
Adirondacks, Upstate New York
Building Journals
The Shop Manual's 8-years old!! Thank's everyone!
New! 'Rondack Lodge Plans!Order Here!
User avatar
Steve Frederick
Custom Teardrop Builder
Posts: 1979
Images: 29
Joined: Thu Apr 15, 2004 5:02 pm
Location: Upstate New York, Adirondacks (Great Sacandaga Lake)

Postby madjack » Fri Sep 29, 2006 10:54 am

yeah...what they said...many folks have made the mistake of fitting hatches and doors tightly, leaving insufficient room for the seal and having to recut to make it fit or putting up with a bulge to get it to close...most seals are made to work best at around 50% compression...IE, 1/8"th gap for a 1/4" seal, etc. etc. etc.
madjack 8)
...I have come to believe that, conflict resolution, through violence, is never acceptable.....................mj
User avatar
Site Admin
Posts: 15132
Images: 177
Joined: Thu Dec 02, 2004 5:27 pm
Location: Central Louisiana

Return to Teardrop Construction Tips & Techniques

Who is online

Users browsing this forum: No registered users and 3 guests