Static structures (e.g. – buildings) – Inclined top cover
Reexamination Certificate
2000-09-11
2003-02-11
Friedman, Carl D. (Department: 3635)
Static structures (e.g., buildings)
Inclined top cover
C052S105000, C052S551000, C052S518000, C428S150000
Reexamination Certificate
active
06516572
ABSTRACT:
FIELD OF THE INVENTION
Roofs, more particularly slate roofs, with an interlayment layer between courses of slate and a method of making slate roofs.
BACKGROUND OF THE INVENTION
Slate roofs are appreciated for their aesthetic and durable qualities. However, they are expensive and the weight of the slate is quite high compared to composition shingles; and, as a result, they are typically two to four times more expensive as composition asphalt roofing. Thus, utility lies in any application of slate on a roof which will reduce the amount of slate needed to effectively cover a roof. Applicants' method and slate roof herein provide for such utility.
A good background for slate roofing and the method for installing the same may be found in the NRCA Roofing and Waterproofing Manual—4th Edition, pp. 1179-1227, that document being incorporated herein by reference. Typical slate roofs are constructed in the manner set forth in
FIG. 1
, labeled “prior art”. With reference to
FIG. 1
, it is seen that a wood roof is first covered with an underlayment layer, typically asphalt felt paper, to which overlapping slate courses are applied with slate covering the roof in two plies except where there is overlap, in which case there are three plies of slate. Through joints should not occur from the slate roof surface to the felt.
Applicant, however, has removed a slate layer and replaced it with heavy-duty, weatherproof interlayment material layer, typically plastic 20 to 60 mil in thickness.
SUMMARY OF THE INVENTION
In Applicants' improved roof and method illustrated in
FIGS. 2
to
6
attached hereto, each course of slate is underlaid with an interlayment material layer such that the interlayment material acts as a base to the through joints. This reduces the amount of slate used by approximately 40% to 50%. Moreover, where Applicants' slate meets side to side (the through joint), the underlaying interlayment material provides sufficient waterproofing to protect the roof. The interlayment material is also less expensive and lighter weight than the slate it replaces.
Applicants' present invention improves upon all prior art slate roofs by providing for a markedly improved weather barrier, lighter weight, and more economical slate roof.
REFERENCES:
patent: 3803792 (1974-04-01), Fulton
patent: 3885075 (1975-05-01), Ferrante
patent: 4694716 (1987-09-01), Sakamoto
patent: 5086552 (1992-02-01), Moore
patent: 5258222 (1993-11-01), Crivelli
patent: 5527409 (1996-06-01), Lanphier
patent: 5570553 (1996-11-01), Balkins
patent: 5791112 (1998-08-01), Plum
patent: 6148578 (2000-11-01), Norwacek et al.
patent: 6237288 (2001-05-01), Jenkins et al.
The NRCA Roofing and Waterproofing Manual-Fourth Ed.; p. 1196.*
PawleyBuilding for Tomorrow; Putting Waste to Work(a Sierra Club Book); pp. 131-135.
The NRCA Roofing and Waterproofing Manual—Fourth Ed.; p. 1196.
Nowacek David C.
Nowacek James J.
Friedman Carl D.
Jackson & Walker, LLP
Varner Steve
LandOfFree
Slate and interlayment roof and a method of preparing the same does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Slate and interlayment roof and a method of preparing the same, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Slate and interlayment roof and a method of preparing the same will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-3170558