Home>Discussions>EXTERIORS>Roof starter course and overlay top course are not staggered - how to correct
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bancroft
Roof starter course and overlay top course are not staggered - how to correct
bancroft

We recently had our roof replaced and the roofer in error did not stagger the starter course and the overlay top course resulting in the ends lining up on top of each other. He is suggesting that the starter course underneath the first layer of shingles be bridged with a new starter course as to off- set the waterlines.

Is this good practice? I think it will also effect the appearance. Is there a better alternative? strip of metal?

We live in Massachusetts, so ice dams, roof leaks are a great concern.

These are 50 year premium architectural shingles. We have used this roofer twice before and were surprised by the mistake from his crew.

Sombreuil_mongrel
Re: Roof starter course and overlay top course are not staggered - how to correct
Sombreuil_mongrel

If they used Ice&water shield, and installed the drip edge correctly, I would be inclined to call it OK. If not, maybe use a "tin shingle" under each seam.
Casey

A. Spruce
Re: Roof starter course and overlay top course are not staggered - how to correct
A. Spruce

Since the warranty comes from the manufacturer, not the installer, what matters is that the materials were installed in accordance with the manufacturers recommendations, if not and there's a failure, it's on you. For the record, the manufacturer only supplies replacement materials, they don't pay for labor.

llmotoll
Re: Roof starter course and overlay top course are not staggered - how to correct
llmotoll

Have him pull them out and shift them to the correct position. Now is the time while you have him on the hook.

That's great he is sorry, but have him prove his regret by fixing the roof and stay loyal to him after he is done give him props to everyone you know who is looking for a roofer.

A shingle lay out pattern is there for a reason and has a proven track record of performance. To achieve the intended service life they need to be installed correctly.

-Ice and water shield is a back up plan intended to reduce water infiltration during an ice dam weather event. Not intended to be exposed to moisture for the entire service of the roof every rain event. Eventually the material will degrade and cause deck damage.
-Nails will rust out and shingles will just start falling off.
-UV deterioration of the ice and water shield is probable. The slightest amount of sunlight penetration will destroy the ice and water shield very quickly.
-Wind uplift could be a concern as well. With the shingles lining up at each end there is a 5" exposure which wind could penetrate. Not good.

Bottom line is its a new roof. A verbal sorry or half a$$ fix does not cut it. If he is truly sorry then he will have no problem fixing it. Oh, i'm sure he may grumble about it a bit. But you will be kicking yourself down the road if you don't draw a line and stand firm now.

Mastercarpentry
Re: Roof starter course and overlay top course are not staggered - how to correct
Mastercarpentry

I could go with them shifting the starter course over, but I'd want every nail hole they left behind sealed with a product like NP-1 with a nail then driven into that hole so the ice shield will seal as it was intended to. And ditto for every other nail they pulled out. Which means pulling every shingle from the roof because each one is overlapped and nailed through by the one above it. In short, you paid for a new properly installed roof, not a repaired one, and that's what you should get. Let them eat their losses so they learn to not do this again.

The proper running of the starter course is so basic to roofing that if they couldn't understand that and do it correctly I would not trust them to have done anything else correctly either. I would not want those guys back on my property ever but that's your call to make. If you do have them back, get a contract drawn up by your lawyer and signed by them placing the responsibility for the roofing materials and installation on them for the warranty period of the shingles. If they aren't willing to accept that responsibility it shows that they know they didn't do the job correctly because a correctly done roofing job will last as long as the shingles do.

People make mistakes but when it's too basic a mistake that shows they were out of their depths from the start and should not have been doing this kind of work at all. I'm betting that it's lawyer time which everyone but the lawyers hates.

Phil

llmotoll
Re: Roof starter course and overlay top course are not staggered - how to correct
llmotoll

By repairing the lay out pattern of the starter course I thought it went without saying the ice and water shield would require a new layer laid over the existing to provide a clean base to install the shingles over top.

Phil brings up some good points. Totally agree. But at the same time the roofing contractor could have simply walked away with the money and it would have been several years down the road perhaps prior to the home owner realizing there was a problem. Based on what the OP states, it seams to me the roofer is trying to make things right and doesn't want to add to his skeleton collection.

The roofer is playing on your emotions though by side tracking you into following his train of thought to compromise on the repair. STOP. step back and make the right choice here. It needs pulled up and laid in correctly.

Or compromise and live with a Mercedes roof on a Yugo chassis.

dj1
Re: Roof starter course and overlay top course are not staggered - how to correct
dj1

You just made a tremendous investment in the best 50 year shingles on the market, right?

Don't let a faulty installation ruin it all.

Re-tracking requires bringing your roof the square one - meaning: all holes must be sealed, before you can proceed to step one.

As mentioned, consequences of a faulty installation can take years to show up, by then you are out of luck and the installer is nowhere to be found.

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