well more like where can i get 1/4 or 1/2" thick mdf?

I've checked home depot and lowe's all they have is the 3/4" stuff. I want to build a false floor in the trunk but i dont want all the weight. so i was trying to go thin.

any suggestions to any other type of wood that wont sag over time- friends are telling me plywood but i just think that with humidity and moisture it would bow/sag over time.

 

Since you didnt stae where you are...check some
car audio shops ( Tweeter/Hi-Fi Buys/Sound Advice/Car toys/Ma-Pa ) in your area
you might have better luck

 

im in TN -
what type of wood is what im looking for-- audio shops keep trying to sell me stuff

 

you want mdf - medium density fiberboard

you DO NOT want particle board

Any lumber yard (not a crappy home improvement center!!!!!) will have it in 4x8 sheets and should be able to cut them for you if necessary.

My local orchard supply sells them in 2x4 sheets in varrying thicknesses - sure you pay a bit more, but it's easy to transport.

 

keep in mind im not building a box - just a false floor -
the only thing i want is that it not sag and be light weight as possible-

why do you recommend MDF? i know not particle board. any other suggestions.
and what thickness is best so that it wont sag

 

If you're building a false floor, you want it to be 3/4... I would think that anything thinner would sag after a while... The floor I built in my EJ is 3/4 MDF and it's holding up straight as ever after almost 6 years...

 

Where is the "false floor" going to be?...in the cabin?...in the trunk?

 

It depends on how well supported the floor is.

I've build floors out of 1/4" MDF before and they have been fine, but they were well supported. Generally, I build the box, then I use some supports for a trim panel that acts as the floor.

There are a few reasons I suggest this method:
1. it's cheaper
2. it's lighter
3. the thinner the material, the easier it is to cut - plus MDF is very easy to work with and get smooth edges from
4. easier to remove and get to the components, etc.....

So, that's what I would do, but every car and every install is different, this is why in car audio everyone should follow the 80/20 rule - 80% planning, 20% actual labor!

Good luck with your project.

 

well to help a bit mnore history-- the car is a 95 integra (gen3)
so im using the hatch cover or privacy cover to build my box- it will be mounted upside down basically.

the false floor is to house the amps in the hatch.

i planned on supporting it by using 1"x2" wood in whatever length needed to raise the floor from where it is now-- then my amps can mount flush.

 

if weight in the main concern, is it possible to brace it in the middle at all. this will keep the cover light, and prevent sagging over time.

 

3/4" MDF is great material

 

what kind of sealer with the 3/4 mdf to keep it from moisture and sagging with time.

 

I really don't understand the whole sub box thing - I'd be wary if you wanted to mount a subwoofer from that flimsy piece of material that covers your cargo area with the hatch down - not what I would consider a good idea - generally speaking

If you carpet the mdf and don't plan on having a wet-t-shirt contest in the trunk, it will be fine. If you really want to seal it, any home improvement center will have sealer. You could even cover it with some resin or with a mixture of wood glue and water...

I've had mdf in cars for years with no worries of rotting - generally its not a high moisture area.

You can use scraps of wood to screw some "ribs" to the floor to strengthen it if you need to.

 

thanks for the advice- I will be mounting the sub from that flimsy material but its actually going to be coated in fiberglass of about 7 layers first...

plus the 4 prongs are going to be reinforced (metal)