[MassHistPres] Slate Roof Substitution Materials

[Steven O'Shaughnessy]

After trying to get a good and somewhat recent Google Maps aerial and
street view of the church I gave up but what I was trying to do is get a
bold/rough assessment of the condition of the current slate roof.  While I
have installed several new slate roofs, I have repaired a fair number as
well and agree with the opinion of the Author of "The Slate Roof Bible",
Joseph Jenkins, that most old slate roofs need repair, not replacement.
Without maintenance, slate roofs like all roofs will start to leak but
often this is not cause for an expensive, wholesale replacement of the
entire roof. I couldn't tell what type of slate is on the roof of this
church but if it is Black Monson, it has the capacity to last for 300
years. Even if it is Vermont Slate it could go for 200 plus. My advice is
to get a second opinion first.
Steven O'Shaughnessy
Dept. head - Preservation Carpentry
North Bennet Street School
Boston, MA

On Thu, Mar 28, 2024 at 11:49 AM Judy Markland via MassHistPres <
masshistpres at cs.umb.edu> wrote:

> Whately would be interested as well and would appreciate any comparative
> cost information.
>
> Judy Markland, Whately Historical Commission.
>
>
> On 3/28/2024 10:51 AM, Malley, Rachel via MassHistPres wrote:
>
> Hello Everyone,
>
>
>
> I’m the new office assistant for the Waltham Historical Commission. How
> wonderful to have this network of knowledgeable people to learn from!
>
>
>
> We have an inquiry from a local church that would like to have the roof
> replaced. The chairman of our commission would like to know if any other
> materials besides the original slate would be acceptable for historic
> restoration.
>
>
>
> This is the church:
> https://s3.amazonaws.com/NARAprodstorage/opastorage/live/85/7918/63791885/content/electronic-records/rg-079/NPS_MA/89001548.pdf
>
>
>
> Thank you!
>
>
>
> Rachel Malley, Administrative Assistant
>
> City of Waltham
>
> Historical Commission
>
> 119 School Street, Room 24
>
> Waltham, MA  02451
>
> 781-314-3389
>
>
>
>
>
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-- 
Steven O'Shaughnessy
Dept. Head  - Preservation Carpentry
North Bennet Street School, 150 North Street | 617 227 0155 *270


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