02:00PM | 01/07/02
Member Since: 01/06/02
1 lifetime posts
I installed crown moulding in my Lvrm/Dnrm/Kit and foyer between late Aug and Thanksgiving useing 4-in wide Medium Density Fiberboard (MDF). The property is 12-years old and is located in the Wash, DC climatic zone. I filled mitre joints and scarf cuts with DAP brand Plastic Wood (Cellulose Fibre Filler) for interior and exterior application or DAP brand premium caulking. Today, I noticed most of the scarf cut joints and two of the mitred cut joints have opened/separated as if the moldings had been pulled in opposite directions from the joint. We had a clean and tight fit after filling, drying, sanding, priming and three coats of latex enamel. However, each affected joint is now approximately 1/16" wide. The temperature range in the house has been between 65 degrees and 80 degrees.
Someone suggested we use only Glazing Compound to fill joints. Area contractors remarked they only use caulking. We paid little attention to the comments of local builders as quality in the DC area is notorously poor.
We would appreciate your opinion on what we did wrong and what we can do at this time to improve the appearance of the scarf and mitre joints.


05:18PM | 01/07/02
Member Since: 09/23/01
242 lifetime posts
With all of the filling, sanding, priming, etc., it looks like you forgot to glue the joints.
The only other thing is if the humidity in your house changes drasticaly. MDF is fairly stable except for moisture.


Post a reply as Anonymous

Photo must be in JPG, GIF or PNG format and less than 5MB.


type the code from the image


Post_new_button or Login_button

These stylish cabinets are a classier way to store laundry goods and give the room a sophisticated, polished look.  It turns out that many bath and kitchen cleansers contain chemicals that are dangerous to the skin and eyes, and often pro... So often we paint tiny nooks white to make them appear larger, but opting for a dark, dramatic wall color like this one—Be... Chocolate-colored walls and large window frames allow the exposed wood beams to take center stage in this small screened p... If you're not crazy about the idea of commingling plants and pool, this modern variation may be more to your liking. The s... Yes, a freestanding garage can become its own tiny house. Artist Michelle de la Vega has all the comforts of a modern resi... There’s nothing like a new set of cabinet hardware to refresh a room. The possibilities are endless: Go modern, rustic, or... Pursue what's known as the stack effect. To achieve it, open the windows on both the upper and lower floors, and as warm a... Like no other floor type, a checkerboard design works wonders to underscore the retro kitchen theme. Vinyl flooring, ceram... Twine lanterns add pops of crafty—but sophisticated—flair to any outdoor setting. Wrap glue-soaked twine around a balloon ... When securely fastened to a tree or the ceiling of a porch, a pallet and some cushioning make the ideal place to lounge. V... Incorporate nature into your lighting scheme by securing a dead tree in a concrete mold and draping your pendant lamp from... For the cost of a can of exterior paint , you can totally transform your porch. Paint the floor a hue that complements yo... In this urban apartment, a standard-issue patio became a serene and green perch by replacing the typical concrete with gro... If you put the washing machine in the mudroom, you can stop the kids from walking through the house in dirty, grass-staine...
Newsletter_icon Google_plus Facebook Twitter Pinterest Youtube Rss_icon