How To Measure For Your Screen Porch or Screen Room.
How to decide size, type, span, load etc. for your screen porch if you do
not have an existing roof over the area you are screening.
- Call your local building permit office. Ask them what live load you will
need for a patio cover roof. Live load is the load your cover will need to
carry, such as snow. We use that number to check that the cover is correct
for your weather conditions.
- Decide where on your house the patio cover (roof) will attach. On the wall
under the eave? or on the roof's eaves? How will this effect the size you
need? See drawings and mesurement examples below.
- Measure the area:
Example: (attaching to the house wall): you have a 10' x 20' (10' from house
wall x 20' wide) patio slab where you want to put the screen room. You will
need a 10' x 20' screen room (30' total of screen wall – 10' side +
20' wide + 10' side). Your roof will be 11' x 22' allowing for a 1' overhang
the screen walls on each side.
Example: (attaching roof to a 16” roof eave): You have a 10' x 20' (10'
from house wall x 20' wide) patio slab where you want to put the screen room.
You will need a 10' x 20' screen room (30' total of screen wall – 10'
side + 20' wide + 10' side). The roof will be 10' x 22'. This will give you
a 11'6” overhang over the front screen wall and a 1' overhang on each
side (you will gain the extra length from the house eave).
Good idea! The roof can be larger then the room if desired. For example:
you could have a 10' x 12' screen room under a 11' x 24' roof giving you
non-screened covered area to one side of your screen room.
- Make a birds eye view drawing and put the measurements on it. Mark where
you want the door(s) and indicate the screen wall heights. Now when you go
back to the kit price charts, you have the information to determine what
you need to order.
If you don't see the size you need, have questions or want to customize your
screen room then either Call us (888 814-7531) – or you can fax or
email us your drawing and we will price it for you. Fax: (210 829-1482) -
- Screen room extras
Size of roof overhang past the screen walls (12” min.)?
Do you have a fireplace to work-around?
How many screen doors will you need (1 included in kit price)?
Do you want a kick panel or have the screen go all the way to the floor?
Consider if you need down spouts (aluminum covers)?
Choose a color for your screen extrusions, kick panel and roof to compliment
This drawing shows a screen room roof attached on the house roof overhang (eaves).
The screen room roof
should over hang the screen walls a minimum of 12”. The overhang in
most cases is the same as the house overhang.
You will buy locally: flashing
to go 3" under shingles and 12" out (minimum) on top of the screen
to House Wall:
This drawing shows a screen room cover attached at the wall under the
house overhang. The span is from the roofs attaching point out to the screen
wall. The walls
will support the roof loads.
Flashing (purchased locally) needs to be considered carefully, where
will it start? for wood lap siding the flashing is bent like the letter
go just under the siding and out on to the cover at least 12". plan
your flashing out before you install the cover.
This drawing shows an 11' x 20' screen room cover with a fire place to
work around. For an aluminum flat pan style patio cover roof you would
inside corners and two extra outside corners plus extra gutter. (for
the sides of the fireplace). For a insulated cover you will need extra
to go around the fireplace chimney.
This drawing shows a screen room and patio cover in a corner, attached
on two sides. Code will require that the screen room's cover roof be
mounted at the
wall with gutters on the house eaves, so all the water that comes off
the house roof does not end up on the new cover.
Can you attach on
the eaves? No, not
if you plan on getting a permit, or you expect to have no leaks! The
span is from the attachment (projection) to the screen rooms front
wall. Think this
one through, as the patio cover when sloped downward, will run off
the eaves board on the side.