General Boards > Technical Support
Where can I drill on body??
RogerMilne:
I'm a complete noob, when it comes to this vehicle. I'm very capable technically and mechanically, BUT, the coach part of the learning curve is still pretty shallow, so please excuse the simplistic aspect of some of my inquiries.
That being said, what are the roof and side walls limitations as far as drilling a hole of screwing something into those surfaces?
Is there any absolute NoNo's as far as say mounting something on the sides or the roof, that will cause damage to underlying components. I don't have the luxury of having seen how these coaches are constructed so unlike a house where I know studs are 16" on center or where there are plumbing or electrics behind dry wall etc, What is the rule for adding something to a wall on the inside or externally or if I want to mount a bracket or something on the rooftop.
Thanks for the info.
David T. Richelderfer:
This link takes you to the 2007 Contessa brochure. In it you will find lots of details regarding the construction materials used. The brochure might help, don't know. I don't know where to find more complete details without contacting the Beaver store in Bend, OR.
chrome-extension://efaidnbmnnnibpcajpcglclefindmkaj/https://www.beaveramb.org/resources/Documents/Technical%20Forum/Coach%20Assist/2007-Contessa-Brochure.pdf
RogerMilne:
Thank you for the tip.
Carl Boger:
Roger,
On the big assumption that your MH is built like mine. The roof is fiberglass about 1/4 inch thick, and then 3/4 plywood, then about 5 inches of white foam then a 1//4 or so of plywood on the ceiling. There is metal framing that the plywood sits on and is screwed down to. As long as you are comfortable adding holes to your roof drill pretty much wherever you want. Use dicor or another sealant to go below the screws and mounts and to cover the tops after.
The side walls are 1/4 inch fiberglass attached to a steel frame with 2 inches of foam and a 1/4 inch of interior plywood. It is all vacuum sealed together as one piece. Here you might want to use a good stud finder and locate the metal framing screwing into it. Not sure what you are wanting to attach to the sides as I have never done it.
Hopefully this will help you some, I totally get not wanting to make a expensive mistake.
RogerMilne:
--- Quote from: Carl Boger on September 02, 2025, 11:54:55 PM ---Roger,
On the big assumption that your MH is built like mine. The roof is fiberglass about 1/4 inch thick, and then 3/4 plywood, then about 5 inches of white foam then a 1//4 or so of plywood on the ceiling. There is metal framing that the plywood sits on and is screwed down to. As long as you are comfortable adding holes to your roof drill pretty much wherever you want. Use dicor or another sealant to go below the screws and mounts and to cover the tops after.
The side walls are 1/4 inch fiberglass attached to a steel frame with 2 inches of foam and a 1/4 inch of interior plywood. It is all vacuum sealed together as one piece. Here you might want to use a good stud finder and locate the metal framing screwing into it. Not sure what you are wanting to attach to the sides as I have never done it.
Hopefully this will help you some, I totally get not wanting to make a expensive mistake.
--- End quote ---
Ok, Thank you. This is exactly what I was looking for.
As for what I'm fastening to walls or roof etc..I'm not..Yet. But there's stuff on my roof that I'm looking into removing and wanted to know what I'd be opening up myself to, once the components are removed.
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