Apologies if this posting is inappropriate, but I would really
appreciate any advice, as this job is well beyond a limited DIY-er like
me. I have had two quotations to repair a flat garage roof, which has
just started to leak. They are wildly different in price and, while
there may well be other factors, I wonder whether the difference lies
in the specifications which I will quote below. Both propose stripping
away existing felt etc and then EITHER (quoted exactly in each case)
FIRST FIRM
1. Lay three separate layer soft 747 BS ruberoid flat roofing felt,
each sealed with hot bitumen so to bond together
2. Finish all edgings with 36 KG green mineral felt
3. Cover whole of the roof area with solar reflecting alloy paint

SECOND FIRM
1. Fixing new built up felt roof covering comprising base layer of
type 3B felt fixed to existing decking and a cap layer of MP400
torch-on high performance mineral surfaced felt including for MP400
mineral surfaced felt to all perimeter details.

We're on a VERY tight budget and won't necessarily be in the property
for ever (but certainly for the next 5 years or so and, anyway, we'd
like to be able to sell it in a good condition), so want to pay as
little as possible, consistent with getting a reliable job done.
We would be so very grateful for any advice.
(PS: I haven't indicated which of the quotes is higher/lower and
wonder whether the specs make it obvious?)
Thanks so much in advance for any advice or comments
Paul

wrote in message
oups.com...
Apologies if this posting is inappropriate, but I would really
appreciate any advice, as this job is well beyond a limited DIY-er like
me. I have had two quotations to repair a flat garage roof, which has
just started to leak. They are wildly different in price and, while
there may well be other factors, I wonder whether the difference lies
in the specifications which I will quote below. Both propose stripping
away existing felt etc and then EITHER (quoted exactly in each case)
FIRST FIRM
1. Lay three separate layer soft 747 BS ruberoid flat roofing felt,
each sealed with hot bitumen so to bond together
2. Finish all edgings with 36 KG green mineral felt
3. Cover whole of the roof area with solar reflecting alloy paint

SECOND FIRM
1. Fixing new built up felt roof covering comprising base layer of
type 3B felt fixed to existing decking and a cap layer of MP400
torch-on high performance mineral surfaced felt including for MP400
mineral surfaced felt to all perimeter details.

We're on a VERY tight budget and won't necessarily be in the property
for ever (but certainly for the next 5 years or so and, anyway, we'd
like to be able to sell it in a good condition), so want to pay as
little as possible, consistent with getting a reliable job done.
We would be so very grateful for any advice.
(PS: I haven't indicated which of the quotes is higher/lower and
wonder whether the specs make it obvious?)
Thanks so much in advance for any advice or comments
Paul

What type of material is the roof covered in at present? Felt with stone
chippings covering it maybe?

If the leak is just in one place then if you can find the problem you'll get
a decent repair just by brushing any chippings to one side, slapping a coat
of roofing mastic on it and putting the chippings back. It's quite possible
the rest of the roof is in good condition and will last as long as you need
it to.
--
Dave Baker
www.pumaracing.co.uk

wrote:

FIRST FIRM
1. Lay three separate layer soft 747 BS ruberoid flat roofing felt,
each sealed with hot bitumen so to bond together
2. Finish all edgings with 36 KG green mineral felt
3. Cover whole of the roof area with solar reflecting alloy paint

That one will give you the better job...

SECOND FIRM
1. Fixing new built up felt roof covering comprising base layer of
type 3B felt fixed to existing decking and a cap layer of MP400
torch-on high performance mineral surfaced felt including for MP400
mineral surfaced felt to all perimeter details.

Torch on is good, but not as good as a hot bonded solution IME.

--
Cheers,

John.

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On Sat, 01 Apr 2006 14:51:14 +0100, John Rumm wrote:

wrote:

FIRST FIRM
1. Lay three separate layer soft 747 BS ruberoid flat roofing felt,
each sealed with hot bitumen so to bond together
2. Finish all edgings with 36 KG green mineral felt
3. Cover whole of the roof area with solar reflecting alloy paint

That one will give you the better job...

What about using a fibreglass system? Some firms do specialise in this
method and I doubt it would cost you much more than a quality felt roof.

It has to be applied in a timely manner before the resin sets. You will
know you have a watertight roof which can be repaired and painted in the
future without having to tear it all off and start again.

I think there is one online firm which sells all the resins, top coat
paints, trims etc.

Martyn


--
Geosolar, Cambridge. Gas central heating installations.
High quality ATAG boilers www.geosolar.co.uk

wrote in message
.com...
Apologies if this posting is inappropriate, but I would really
appreciate any advice, as this job is well beyond a limited DIY-er like
me. I have had two quotations to repair a flat garage roof, which has
just started to leak. They are wildly different in price and, while
there may well be other factors, I wonder whether the difference lies
in the specifications which I will quote below. Both propose stripping
away existing felt etc and then EITHER (quoted exactly in each case)
FIRST FIRM
1. Lay three separate layer soft 747 BS ruberoid flat roofing felt,
each sealed with hot bitumen so to bond together
2. Finish all edgings with 36 KG green mineral felt
3. Cover whole of the roof area with solar reflecting alloy paint

SECOND FIRM
1. Fixing new built up felt roof covering comprising base layer of
type 3B felt fixed to existing decking and a cap layer of MP400
torch-on high performance mineral surfaced felt including for MP400
mineral surfaced felt to all perimeter details.

We're on a VERY tight budget and won't necessarily be in the property
for ever (but certainly for the next 5 years or so and, anyway, we'd
like to be able to sell it in a good condition), so want to pay as
little as possible, consistent with getting a reliable job done.
We would be so very grateful for any advice.
(PS: I haven't indicated which of the quotes is higher/lower and
wonder whether the specs make it obvious?)
Thanks so much in advance for any advice or comments
Paul


I had the first type of roofing (although without the reflective paint - I
had granite chippings instead) on an extension and got 20 years out of it
before a leak. I think it came with 10year guarantee.
It has just been replaced with the second type of roof. It now has a 20 year
guarantee and the fitters said it should lasts 30 years.
The felt they used had fibreglass re-inforcing in it.

I suggest you ask about guarantees from both suppliers and go with the
cheapest who offers sufficient guarantee to still have some left to pass on
when you sell.

If your garage has a chipboard decking and it has been leaking, be aware
that you might well have to have new decking. This could be a DIY job if you
wanted to save money.

good luck

Bob

Thanks to all of you who have taken the time to reply. I posted the
same question in free.uk.diy.home and one person replied recommending
FIRM 2 quite strongly. For the record, the two quotes are Firm 1:
£675 and Firm 2: £1420. Quite a difference! I'm INCLINED (not
surprisingly, I suppose) to go for the cheaper option. The respondent
in the other NG said that the solar reflecting paint needed redoing
every 18months - 2 years, which I'm assuming is not too hard, even for
someone pretty incompetent, like me.
Any final thoughts, advice, comments etc would be very welcome.
Meanwhile, thanks again
Paul
Lincolnshire

Martyn Pollard wrote:

What about using a fibreglass system? Some firms do specialise in this
method and I doubt it would cost you much more than a quality felt roof.


Both fibreglass and some of the rubber membrane roofing systems are
supposed to give a longer lasting result that felt. Having said that the
level of succcess with felt does seem to vary quite a bit depending ont
he skill of application and the quality of the sub base.


--
Cheers,

John.

/================================================== ===============\
| Internode Ltd - http://www.internode.co.uk |
|-----------------------------------------------------------------|
| John Rumm - john(at)internode(dot)co(dot)uk |
\================================================= ================/