In prepration for the summer I recently installed reflectix foil insulation to my 1990 wagon's ceiling to reduce the radiant heat gain from the cieling . I bought reflectix 2'X25'X1/4"(th) roll for 28$ from Lows.It was attached to the ceiling using 3M Super 77 spray adhesive (9$).I installed double layer of this insulation.I hope it will help in summers although in the wagons the biggest heat gain seems to be from large glass area of trunk area.It was very simple procedure. Here are the steps for the novice like me.

1. Removed handle and the courtsey lights ( Precution :Put tape on exposed connections as they will short when they will touch the bare metal of ceiling ).I left the sun visors and rear view mirror in place as there is really need to remove them.

2. The design of headliner is like a stretched tent . The perimeter is held down by a metal bracket and the stretch in the fabric is because of 4 metals bows which hold the fabric from above. Start removing the fabric from corner by inserting a flat screw driver and pulling out the fabric . There is 1/4" wide black vinyl flat strip at the edge of fabric.

3. To remove steel bow pull down at the centre . It is very flexible . It is kept in bow shape by the walls of the car.

4. Cut insulation to size and put it against the cieling and from one side spray adhsesive . If you spray first and then try to put insulation against ceiling then it can stick in wrong place as this adhesive is very sticky .

5. Putting back the headliner is much easier than removing it.

This was more of a exercise to know how to post pictures .I now can greatly appreciate the efforts of those who post pictures and click them in the first place while working.

Here are some pictures.One key picture which shows how to pull fabric at the edge is missing. These do not capture as much details as would I have liked them to be .

The Metal lip which holds the fabric at the edges



The bare ceiling with black tar paper ( The factory installed insulation)Note the metal lip running along the perimeter (just above the black trim of window)



Double layer of insulation installed . It is 1/4" th with total thickness of 1/2" it is not noticable when headliner is put back.



This is the steel bow which stretches the fabric and holds it from the top




Regards
Gopesh