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Question DetailsAsked on 9/1/2015

My contractor put up the vinyl siding on my house and it is crooked,

Where should the siding be started - at the roof line or the bottom of the house?

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2 Answers


siding starts from the bottom and works its way up. there is usally a starter strip invoved, also very important to make sure the first row is level.

Answered 4 years ago by the new window man


Normally, the contractor should determine what "house level" is - meaning in the same line as the window frames and framing. Sometimes with houses that have leaned or settled the homeowner has to be given the choice between aligning with the house or putting it on horizontally level but at an angle to the house. With tilted/leaning house, say tilting forward or back so the endwalls are racked (the more common situation, when one load bearing wall (usually front and back) has settled) you sometimes for instance run the siding horizontal across the front, continue on around the ends horizontal, then align the back as well as you can. Other times if the homeowner wants it to line up with the roofline and window framing so the appearance is consistent, the endwalls might actually be installed at an incline to match the house tilt.

To the maximum extent possible consistent with any decision (which should be in writing) to match the house lean, the courses should match up around the corners - i.e. the top of a row should align as you go around the corner. And barring a deliberate decision to the contrary, the siding should be horizontal (level), which might or might not align with the top of foundation (whcih should be no concern because the siding should overlap that anyway) and may or may not align perfectly with the roofline depending on house tilt.

Almost all siding, and certainly all lap siding and lapped panels, is installed from bottom up - because each plank or sheet has to overlap the installed one below it. However, which order it is installed should not matter. The contractor should snap chalklines (or use correctly aligned laser) on the housewrap/underlayment for the starter row and every few rows above that to maintain correct alignment.

If the lay of the siding is uneven or tilted without specific approval for that, you should withhold payment and make him take it off and replace it - including replacing any planks that are damaged in the process. If he refuses, withhold payment and contact his Bonding company with a claim for them to have another contractor do it right.

If you wish an unofficial independent opinion or two or whether your situaiton would be considered in the industry to be substandard or not, you can use the Answer This Question button right below your question to reply, and post photo(s) using the leftmost yellow icon above the Your Answer box that comes up when you click that button. The photos should show the entire walls of the house, not closeups - two angled shots in from opposite corners might do the job, or might take four to show it right.

Answered 4 years ago by LCD

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