Post Number: 1
|Posted on Tuesday, April 24, 2012 - 11:45 am: ||
JRC Roofing Distributors import slate from major slate areas throughout Europe. Based in Burnley in Lancashire, JRC Roofing Distributors Ltd is a well established and highly experienced slate, tile and ridge specialist. We've been supplying roofing slates locally within the North West and nationwide throughout the UK since July 2000.
The roofing slate that we import is mainly Spanish. The guarantees we offer range from 30 to 100 years on these slates.
More information can be found on our website: www.jrcroofing.co.uk
(Message edited by JRCRoofing on April 24, 2012)
Post Number: 111
|Posted on Wednesday, April 06, 2011 - 09:16 am: ||
Unfortunately there are a few draw backs to imported slates. One issue that we ran across was the size (being cm versus inches). Here in the states, we’re more accustomed to specific lengths and widths in increments of inches (not 1/4" or 1/2" as many of these slates will measure). I do have a pallet of Black slate out in my warehouse in which those slates measured 17-5/8” x 9-3/4” overall.
Although absorption ratings look good on paper, there are not many roofs in which you can view personally, first hand, that was installed 75 years ago! So in some cases, you’re “rolling the dice” with the product that you receive. As indicated previously, we’ve replaced many Chinese slate roofs that failed – failed bad – within the first 5 years. In ALL of the cases the cost of replacement fell upon the home owner and not the quarry! With Vermont or Buckingham – there’s a physical warranty that covers deterioration and delaminating (100 year warranty). In my time in the tile and slate roofing industry (over 10 years), I have yet to receive a call concerning a failing Vermont or Buckingham.
My final thought is that here in the United States, we’re used to installing Vermont and Buckingham slates – been doing so for over 100 years! The logic here is that if it’s not broke, don't fix it! Support your local quarries and invest in their futures!
Eric P. Loema
Sales | Salvage | Procurement
P (800) 699-5695 | F (815) 547-1425
Web: www.TileandSlateSales.com | www.ClayTileRoof.com
E-mail: epl@TileandSlateSales.com | epl@ClayTileRoof.com
Post Number: 14
|Posted on Wednesday, April 06, 2011 - 02:33 am: ||
Water absorption is 0.3% for Spanish Slate. Our slate is 0.18 water absorption. and weather resistance is 0.016mm. It belongs to S1. The service life can reach more than 75+ years.
Shanghai AD slate Co., Ltd
ASTM-S1/EN12326 T1 S1 A1
Roofing slate manufacturer.
Post Number: 575
|Posted on Saturday, January 22, 2011 - 08:24 am: ||
The guy that posted that is from over the pond. I personally have never used any of those slates, as most of what we use here in the states is domestic. Have you googled it?
Post Number: 1
|Posted on Friday, January 21, 2011 - 10:15 am: ||
CAN ANYONE TELL ME WHERE A SARIA SPANISH SLATE WOULD COME IN THESE GRADINGS?
Post Number: 3
|Posted on Saturday, February 20, 2010 - 02:01 pm: ||
Hi, the years they last are totally a waste of time, ie. the best welsh slate having a 75+ year life. They can last forever, unless a 3rd party breaks them, foot traffic, falling debris etc... We have reslated roofs that have been done 4 times previous. Apart from having a selection of holes, they are as good as when they where quarried. My opinion, slates cut with the grain, often by hand will outlast any machine cut slate.
Post Number: 150
|Posted on Friday, February 19, 2010 - 12:04 pm: ||
I bet they leave the U.S. out on purpose, those time ratings at the bottom are not so good.. Differentiating between 5 and ten years for slate longevinty is like rating asphalt shingles. Machine cutting with no regard to grain seems like it would produce a product that would not hold up very well. May as well go man-made by that point.
Post Number: 401
|Posted on Monday, February 15, 2010 - 09:43 pm: ||
There are good and bad slates all over the world and some from the same quarries. It depends on how deep they go and how much of the overburden they "scrap" first
Post Number: 2
|Posted on Monday, February 15, 2010 - 09:37 am: ||
Hi 'Old School', no, for some reason, all the imported slates into the UK are nearly always Spanish, Chinese or Brazilian. So cant comment on US slates, if them are as good as you say they are we could do with some here.
The older slates always seem to be better as they where cut with the grain (hammer and chisel job). Unlike now, machine cut from any direction. Alot of slates in UK as country is full of Terraced houses (built by the Mill owners) and all have slates on them. If you have any official ratings let me have them and I will add them onto the list. Thanks,
Mark - www.pinnacleroof.co.uk
Post Number: 400
|Posted on Monday, February 15, 2010 - 08:15 am: ||
Mark, didn't they rate any of the slates from the U. S.? I have seen some of the buckingham Virginia slates that are over 70 years old and they are hardly broken in yet. They have to be at least A+
Post Number: 1
|Posted on Monday, February 15, 2010 - 07:42 am: ||
Hi all, stumbled across this site by fluke. Im a roofer in the UK and thankfully we have the best slates in the world. Welsh, Cumbrian or Cornish. All have been mined when they are ready. The best reslate or new slate roof will be using reclaimed slates, not many of the new imported ones. Here is a natural slate classification chart. Which looking through is accurate. Use grade A+ if you have an unlimited budget, then grade A then B. forget C or D as you will only get come backs.
Siga 30 (Spain)
Siga 34 (spain)
Siga 42 (spain)
Del Carmen Ultra (Spain)
Samaca 24 Primera (spain)
Villa Del Ray (spain)
Del Carmen First X1 (spain)
Matacouta Ultra (spain)
Siga 31 - spain
Siga 32 - spain
Siga 33 - spain
Siga 36 - spain
Matacouta Ultra Heavy - spain
Del Carmen Classic - spain
Vittoria - spain
River Grey - china
East Moorland green - china
Blue empress - china
Samaca 55 standard - Spain
Samaca 49 Primera - Spain
Siga 27 - Spain
Siga 35 - Spain
Samaca 15 Primera - Spain
Montana - Argentina
Dynasty - China
Celtas - Spain
Classic reclaim - China
Siga 24 - Spain
La roca - Spain
Amazonia - Brazilian
Canterverde - Brazilian
Samaca 15 ECO - Spain
A+ rating has 70+ years life
A rating has 60-65 years life
B rating has 50-55 years life
C rating has 40-45 years life
D rating has 30-35 years life
These are all researched official ratings by SIG group.
Hope this info helps, any questions please ask.