Lead is the most common material around chimneys, vents and windows on a house to prevent any leaks from happening and it’s likewise perhaps the very best material to utilize to stop rainwater from leaking through the join on your conservatory. This short article will cover what type of lead is most ideal for this task and will also walk you through the steps to using lead flashing to a basic conservatory join. There are numerous various procedures to set up flashing consisting of Apron, Action and Chimney, this short article will give you a step by step to setting up Apron flashing (this process may vary slightly if you have actually a flat roofed conservatory).
What Type Of Lead Flashing You Need
The thickness of a lead flashing is distinguished by a code varying from 3 to 8. If you ‘d like to learn more about the different codes and what they describe, we have an actually helpful guide on this here.
In other words, a thicker lead supplies more security but is less flexible and for that reason harder to shape. If you’re using cause a flat roof where water can pool, for example, a thicker lead would be needed for the additional security however, for an angled roof conservatory Lead Code 4 is advised as it’s thick enough to be strong and resistant whilst still being easy to flex to fit.
How to Apply the Lead Flashing on Your Conservatory
The lead flashing requirements to cover the seam where the conservatory fulfills the house on the external wall. In order to bring this job out you will first require to determine the length of the joint and determine what length of lead flashing you need to acquire.
In order to do this and to perform the rest of the task you will require a strong ladder as a conservatory roof will not take the weight of an individual, you can discover a terrific selection of ladders, from extension ladders to ones with an useful platform on at Roofing Megastore.
Determining for the Lead Flashing
Determining for the lead flashing needs discovering four various measurements:
The Chase Depth: The Chase is the line of mortar in between the two rows of brick deals with where the top of the lead flashing will be placed
The Drop of the Wall Flashing: This is the drop from the Chase to the top of the conservatory roof
The Width of the Overlap Required on the Conservatory Roof: This is just how much the flashing requirements to cross the conservatory roof and is normally 15cm/6inches
The Total Length: This is the length of the joint between the conservatory and the external wall of your home
The Chase depth will affect the thickness of the lead required to some degree, both the lead flashing and a brand-new line of mortar to protect it will require to suit this area – as discussed formerly typically lead code 4 appropriates.
The Drop and the Overlap will indicate the width of the lead required, you will require to make sure that you length of the roll (or rolls) of lead that you purchase are a little longer than the overall length so that it can twist around the edge of the top of your conservatory, sealing it in place.
There’s a wide range of lead rolls readily available. A roof flashing repair is often necessary.
Step by Step to Putting Up Lead Flashing
- A durable Ladder
- Lead flashing of suitable length and thickness
- Little ankle mill with a diamond tipped mortar raking disc
- Dust Mask
- Eye Defense
- A Stanley knife or Snips
- Lead Cabinet or a small length of timber baton
- Patination Oil
- Remove the Mortar
If you’re fitting lead flashing where there isn’t presently any then you will require to get rid of some mortar from between the bricks where the lead flashing is to be placed. This need to be approximately 15cm/6inches above the line where the conservatory roof satisfies your house’s external wall.
Utilize a little ankle mill with a diamond tipped mortar raking disc (using a dust mask and eye security) to rake out the mortar to a depth of 15– 20mm (say goodbye to) along the whole length where the conservatory meets the wall. This gap is then called the Chase.
If you are replacing old lead flashing then you will need to eliminate this, utilizing a slotted screwdriver to select the mortar behind it is a reliable way of doing this.
Use a brush to clear anyhow any dust and particles.
- Cutting the Lead Flashing
The lead flashing should not be used in lengths any longer than 5feet/1.5 metres, Lengths determining 1.2 m/4feet is ideal, any longer than this and it is prone to splitting as lead flashing expands and agreements with time.
Cut your first piece of lead using a Stanley knife or snips. Bear in mind that when you install the lead flashing you will require to overlap each piece by a minimum of 10cm and you will likewise need to leave an overhang either side of the conservatory roof to seal the ends.
- Shaping the Lead Flashing
First off utilize a piece of lumber to tap your strip of lead flashing flat.
You will then need to flex the small area of lead that is to be inserted into the Chase at ideal angles to the rest of the strip. To do this position the length of the lead over a baton of lumber, or something else with a straight edge to mould it around. Ensure that the quantity of lead flashing that requires to go into the chase is extending over the baton and tap the lead with a hammer to bend it down along the whole length at best angles to the rest of the strip.
You will now need to flex the lead in half at an angle so that part of it will lay flush versus the drop on the wall and the opposite will lay flush on the conservatory roof. Mark on the lead the width of the overlap that you measured earlier and bend it at this point along its whole length, you might wish to utilize a baton of timber to lean it versus whilst you do this.
You will require to repeat this process up until you have enough strips for the entire length of the joint between the conservatory and the external wall of your home (although it’s wise to check putting the first one in place to make sure that you have the correct measurements before continuing on with the rest of the strips).
- Lead Straps
Now that your pieces of lead flashing are ready you ought to attach strips of lead onto the conservatory roof to utilize to secure the bottom of the flashing in place.
Lead straps can be made merely by cutting strips of lead flashing 2.5 to 3.5 cm wide and approximately 3cm longer than the width of the overlap (so if your overlap is 15cm they need to be 18cms roughly). These straps should be attached onto the conservatory roof where you plan to include the flashing, they will sit underneath the flashing overlap and due to the fact that they are longer than the overlap they can be bent up over the bottom of the flashing to hold it in place.
Location the straps at periods 10cm less than the length of your pieces of lead flashing and fix them into the nail holes of the tiles that are already on your conservatory roof. Positioning them at periods 10cm much shorter than your lengths implies that when you fold them up they should cover the overlap in between 2 lengths of flashing, helping to make sure that it is not effected by wind lift. You can likewise use the straps to protect the strips of flashing as you go.
- Fitting the lead Flashing
When installing the flashing start positioning the flashing on the left and work your method across the whole joint of the conservatory. Overlapping each piece of flashing by a minimum of 10cm and insert the chase area into the space where you eliminated the mortar.
To protect the Chase area you can just utilize lead chocks/bungs for this which are narrow strips of lead flashing rolled up. The bungs must be slightly bigger than the space of the chase and you ought to strike one end of it to create a small wedge shape. Then place the bungs into the chase on top of the flashing to hold it in place, you will need to utilize a hammer and a boost or chisel with a guard to press these into the gap with till they are protected and flush with the wall but be conscious not to damage the brick. Location a bung approximately every 45cm/18 inches throughout the length of the flashing.
As soon as you have all of your lead flashing strips up throughout the overall length of the seam of the conservatory you can gently beat the lead flashing flush versus the wall and tiles by holding a piece of lumber, or a lead dressing tool, versus the flashing and tapping this carefully with a hammer (carefully over the tiles).
If you have not already, make sure that the straps are bent over on top of the flashing preferably these will cover the points where the lead flashing is overlapped. If they are not you can also utilize a basic cut and fold procedure.
The lead flashing ought to overhang your conservatory at both ends, just form the overhang and seal it down against the side of the roof to prevent any water ingress from taking place.
If you have profile tiles you can form the lead down so that it fits the tiles efficiently, leaving no gaps for rain to get under by tapping it carefully with either a lead cabinet tool or the bottom of a hammer.
- Ensure Whatever is Secure
When all of the lengths are laid tap down the top of the lengths of the lead in the Chase using a reinforce and making certain it lays flat against the brickwork
You will then need to press mortar into the chase to fill it back up, making certain that it goes all the way back – it’s very essential for the stability of the bricks that it fills the entire space. Clean away any runaway mortar with an old rag.
You can then apply Patination oil to the lead flashing to prevent carbonisation and white colouring on the lead from happening.
And you are done !!
Your apron flashing should now be total, keep in mind that if you have a flat roof conservatory or wish to set up step or chimney flashing the process will vary.