iPhone Screenshots


BuildersCalcs ROOF   With this IPhone App you can forget "Guesswork" and "Trial and Error" and make your
steel square redundant forever and bin the headache pills, because anyone with a Pencil,Bevel and Saw can
cut a "Hip Roof " with ease. This IPhone App is a Professional Roofing Carpenter in your pocket. Just enter
the relevant Dimensions into the program and be instantly provided with every Rafter, Hip and Jack Rafter
Length and Overhang Length plus all the Angle cuts and Birdsmouth Dimensions.
Will accommodate any size of Timber or Building including Small like Dolls houses / Modelwork and Large as
in Mansions. At the tap of a button a set of Dimensions is available for you to mark out a triangle and set your
bevel for marking out all the Angle cuts if you don't have a Protractor handy.
The program stores all your settings so you can recall them at any time.
The program works with two "Separate" modes of Entry, Metric and Imperial.
Metric Roof angles are entered in degrees.
Imperial can be entered with Slope or Degrees.
Separate comprehensive help files with each section of program.
Entry for any Timber size.
Caters for Soffit overhangs of up to 60 inches Imperial.
Any Dimension for Metric.
Check timber sizes to Eurocode 5.
Information provided by the Program includes.

* Length
* Overhang Length
* Plumb cut Angle
* Seat cut Angle
* Ridge Length for Hip Roof
* Birdsmouth Dimension

* Length
* Overhang Length
* Plumb cut Angle
* Seat cut Angle
* Side cut Angle
* Birdsmouth Dimension

* Length
* Overhang Length
* Plumb cut Angle
* Seat cut Angle
* Side cut Angle
* Shorten each Jack Dimension
* Birdsmouth Dimension

* Dimensions to create a triangle for marking out all Angles

What’s New

Version 1.9

Updated to work correctly on all iPhone screens and general improvements to the help files and made easier to use.

Ratings and Reviews

3.6 out of 5
11 Ratings

11 Ratings

dolton84 ,

Not bad

Seat cut and plumb cut are round the wrong way. Needs updating

Developer Response ,

Check out our latest update the problem you are experiencing is fully addressed in the help file because of the way the power mitre saws are marked out, when making a square cut which is 90 deg the saw will be marked 0 deg totally confusing???? resulting in some users thinking the app is at fault when it’s all down to the saw markings.

Jamie1982_11 ,

Quality app

Best roofing app I’ve used been using it for 10 years + if I could give more stars I would 👍🏻👍🏻

qcxzmnbvtyiporster ,


Got the app and none of the dimensions it figures out are correct so basically a complete waste of money and if you cut a roof off it on the ground would end up costing you a fortune as every rafter would be the wrong length and the quantities would be well more than required extremely dissapointed

Developer Response ,

Would you please email me with your issues and you will be surprised how much support we will give you to resolve your problems with our program that we know works 100%.


Robert Thompson
14.6 MB

Requires iOS 10.0 or later. Compatible with iPhone, iPad and iPod touch.



Age Rating


  • Family Sharing

    Up to six family members will be able to use this app with Family Sharing enabled.

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