Why would a roofer do this?

New house, fair number of exposed nail heads, some were caulked with silicone, some were left exposed. I can see that there is no way to avoid a few exposed nail heads on the ridge (on the ends) but not why they would be randomly scattered across the roof. Also if it were me, I would never use silicone on a roof, or where it was exposed to weather, and plan to write it up that way. (silicone does not stick well to rough surfaces exposed to weather, such as asphalt shingles, a non curing sealant such as tar should be used…)

Any roof specialists can tell me I am over reacting? I don’t think its a big deal, but it is a new house.

That is where the “SIDING CONTRACTOR” installed the pump jacks…

Pump Jack ???pumpjack.jpg

OK I looked it up, so, I now now what siding contractors call a pump jack. I am in oil country :slight_smile: Still ta me, those nails should a been pulled and the holes caulked, what say others?

best practice…imo
use an approved sealant
• Asphalt roof cement containing asbestos [ASTM D2822, Type II]
• Asphalt roof cement, asbestos free [ASTM D4586, Type II]
• Elastomeric flashing sealant [ASTM C920, Type S, Grade NS]

repair exposed fasteners

  1. scrape granules from cut or culled shingles
  2. apply sealant to cover fastener and bond to shingle surface completely
  3. apply loose granules to completely cover wet sealant and apply pressure to embed granules
  4. any excess granules will blow or wash off along with other loose granules

If you pull the nails it will create a hole that needs to be filled further than just a bit of caulking on the nail head. If there is ice and water shield under (common use here in Vermont, roofers will do the whole roof with it), it will seal around the nail also. The caulking should be plenty to keep it sealed.A lot of guys will actually sprinkle roof stones on the caulking after applying.

In my earlier years, I’ve pulled the nail and done the stone sprinkling thing, too. But only after lifting the upper shingle and tarring (not caulking) the hole and pushing the top shingle back into place. Some tar will squeeze out on top and that is where I sprinkled the few stone that I retrieved from the gutter. :slight_smile: I never found that caulk stay stuck to the shingle, hence, I used roofing plastic/tar.

Larry and Jeff that is what I recommend when it is a new roof job. I still can’t for the life of me see why Roofers can’t figure that out.

When would you recommend installation of low slope shingles?

All the time it just takes a little longer and requires a good roofer with knowledge.

Shingling a low-slope roof

           Q: I plan to reshingle the  low-slope roof (2-in-12 pitch) on my country cabin here in Canada. I  would rather not have to remove the old shingles, but the roof has begun  to leak. Can I just shingle over the existing roof, and do I need to  use a special type of shingles?

*                Mauri Meere         ,  Ottawa,  Ontario,  ca            *     

       A:                 *Former senior editor Roe A. Osborn replies:* According to the [(http://ec.tynt.com/b/rf?id=dFBVZMQ4Gr45-vacwqm_6l&u=FineHomebuildingMagazine)


I should mention though I would not recommend this diagram and info to be followed.

So why did you post it?

This is more accurate and up to date.

The nails go under the shingle, not on top.

When your done, pull, seal hole and glue shingle tab.


Atta Boy !..

I used pump jacks for years, we usually lifted the tabs and nailed the cleats or removed the shingle using a flat bar and replace when done.

Never ever nailed on top of a shingle and then applied silicone.

In This Article:
Shingle tabs are** lifted up** and metal roof jacks nailed through the roof into the framing also. 2x10 planks are fastened to rows of roof jacks to create a stable work surface.

Proper Installation.

Pump jacks are different than roof jacks.

No kidding!
Not sure what the holes are for because both do not require holes on top of the shingles. Even best practice for vents is to prevent exposed holes whenever possible.

The nail patching locations in the OP’s 1st post picture is where pump jack brackets would be nailed, typically. But, of course, not through the top of the shingles. I can’t see how roof jacks would connect in those locations. There would only be one per row. :shock:

But, none-the-less, the patchwork is less than satisfactory. We can agree on that.