Often referred to as Georgia-Pacific® or Hardboard siding, this type of siding is made by numerous different manufacturers. Each company’s wood fiber board is made in roughly the same manner and tends to have the same problems. After this siding has been installed for some length of time it tends to expand slightly.
This causes the area around the nail heads to become damaged, allowing moisture to penetrate the board’s surface. As the moisture level rises, the board’s edges tend to expand breaking the paint, which, in turn allows rainwater to enter, causing the breakdown and deterioration of the product.
Hardboard planking also tends to shrink and swell along its length, breaking the seal where the boards joints have been caulked during installation, leaving them vulnerable to water penetration.
It is very important that the caulking on this hardboard type siding is maintained in good condition. Regular repainting of the home is strongly recommended to slow down the deterioration process, even though the paint may still appear to be in good condition.
It may be possible to slow down the deterioration of this siding by regular painting and caulking; 
however, homeowners should be aware that there will be a problem with the siding in the future.
NOTE: There have been a number of class action lawsuits against the manufacturers of hardboard siding. For information on the claim process go to Claim Source One.
