Canopy roof

[Jothetaxi]

We are unhappy with the finish to our roof canopy.  The building contractor added the flashing after rendering, then sliced and sealed the flashing into the render as a finish.  Our understanding from our drawings was that a bellcast bead would be used at the bottom of the render, overlapping the flashing (as shown in the canopy profile drawing).

The render is silicone render. The left wall of the canopy is also insulated. We believe the contractor used SPS Envirowall.

 

We are looking for options tidy this up, as it the main focus point to the entrance of  the house.

 

Any suggestions would be gratefully received.

 

Detail 6 - Front Porch Canopy.pdf

[Roundtuit]

My first observation is that they haven't used the ventilation system as specified, and secondly, there doesn't appear to be any flashings on the side walls which seems odd.  Have you had the conversation with the contractor to ask why they deviated from the drawings?

[Jothetaxi]

30 minutes ago, Roundtuit said:

My first observation is that they haven't used the ventilation system as specified, and secondly, there doesn't appear to be any flashings on the side walls which seems odd.  Have you had the conversation with the contractor to ask why they deviated from the drawings?

Thank you for the reply and thank you for the observation - we hadn't noted there is no flashing on the side wall.  

 

The contractor's excuse was ' he did it in the more traditional way'. Obviously this is an unacceptable response. We are following up with the contractor as we know it is a deviation. We know they rushed to complete the job; the canopy was the last area to be completed. Nobody oversaw the sequence of work, meaning  this area was left as an afterthought.

[Mr Punter]

On the drawing the flashing is not long enough to cover the top row of tiles.

 

Having a roofed canopy addition on a timber frame with a rendered finish is always going to be very tricky to sequence and detail.  It looks like the architect put this in the Too Difficult pile and left it for "others" to mess up.

[Redbeard]

I may have misread the dwg. It seems like, as drawn,  there's a ventilated void, meaning that the render must be on a renderboard on battens. If a typical renderboard is no more than 15mm thick (and often less) then there's precious little to grind into. Or was the detail changed and the EWI was rendered directly onto the insulant, in which case it is not built as drawn and cannot function (in a 'vented fashion') as intended.

 

Or have I read it all wrong? Is the answer to the mystery in 'E.W.3'?

[Jothetaxi]

 

14 minutes ago, Mr Punter said:

On the drawing the flashing is not long enough to cover the top row of tiles.

 

Having a roofed canopy addition on a timber frame with a rendered finish is always going to be very tricky to sequence and detail.  It looks like the architect put this in the Too Difficult pile and left it for "others" to mess up.

Thanks for reply. This is probably why the architect is saying the finish is to a satisfactory standard.

 

Any ideas on how it can be rectified to look reasonable? or are we talking a full re-design of this area?

 

To us it just looks a mess.

[Mr Punter]

30 minutes ago, Redbeard said:

I may have misread the dwg. It seems like, as drawn,  there's a ventilated void, meaning that the render must be on a renderboard on battens. If a typical renderboard is no more than 15mm thick (and often less) then there's precious little to grind into. Or was the detail changed and the EWI was rendered directly onto the insulant, in which case it is not built as drawn and cannot function (in a 'vented fashion') as intended.

 

Or have I read it all wrong? Is the answer to the mystery in 'E.W.3'?

 

I don't think you have misread.  It looks like a thin coat render onto mesh on carrier board, so probably 6mm thick.  God knows what has gone on and what to do.  I would go back to the architect and ask for their suggestions.

[Iceverge]

That drawing seems to carry some magical thinking in a few areas . 

 

I'm really not certain what went on in this area. It doesn't fill me with confidence that your designers details were up to scratch. 

 

 

 

Do you have any specification as to what the builders were working to? Any pictures during construction? 

 

What is your specific objection to the work? Aesthetics or is it unsafe or leaking? 

 

What may help is if you have any wider drawings of the same area. Particularly sections. 

Edited 2 hours ago by Iceverge

[Jothetaxi]

Thanks for taking the time to reply. As the home owners we don't have the technical expertise to fully comprehend the technicalities of what is going on in the drawings, but it seems like the architect also has some questions to answer here?

 

Having had rendering undertaken on our previous properties, as well as seeing local properties in our area with similar canopy finishes, we noted the use of a bell cast bead over the flashing and then noted it wasn't used on our canopy.   We noted the addition of a bell cast bead, at the end of a render finish, creates a clean and even finish when it meets flashing and a tiled roof line. To be honest, the initial impression was about the aesthetics of the roof finish and render (plus chipped tiles). In simple terms, we think it looks a mess.