Hilti Laser Range Meter Roof Measurement

Measuring a roof can be easy or hard. It depends on the type of house you are trying to measure. Most roofers rely on getting up on the roof to take lengths and widths of the build. This works great except when the roofs are steep are difficult to access and navigate, when they are real tall roofs that need long ladders just to get to the eaves, and then the real cut up ones with many facets that are the hard to draw out. Many contractors purchase aerial report now available to measure those difficult houses.

Hilti PD32 Laser Range Meter

The Hilti PD 32 Laser Range Meter

I am very lucky to have spent a lot of time in, on and around the roofing trade. So, having that understanding of a roofs anatomy. Using that, I have designed a great way to measure roofs, safely and accurately and rarely need to access any roof to get measurements.

One of my favorite tools is made by Hilti and called a laser range meter. Now I know there are some old-timers out there that will laugh, but hear me out. This measuring device is very helpful if you use it wisely. It is just like any other tool in the tool box, knowing how to use it and knowing the limitation of the tool are key to success. I bought my first lasers in 2004 and would never estimate another roof without one. The best features are extremely accurate, battery life is very good and the Hilti PD series are easy to use.

I hold the device in line with a starting place eave, take aim to the opposite eave, by shooting the back of a gutter or fascia board, is as simple as pushing a button. I continue walking around the building gathering measurements and logging them on a grid sheet I designed and this provides me with the footprint of the house. Then using math I can figure the pitch, rakes, valley, and hips. I use a two foot scale grid sheet and it works well for me. When I get a larger building I just tape to papers together. Using this grid sheet and drawing the house as you take the measurements, gives you a nice perimeter and you should finish exactly where you started. If not, you know automatically and can correct your mistake on site.

I use a rafter book or pitch factors to gain the slopes, valley, and hips. Ridge on the gables is simple math  [ length of eave plus 1/2 of span. ]  Using these few tips can save a lot of risk walking on a wet slippery or steep sloped roof.



About author

Bob 270 posts

Since 2005 Bob has been answering questions, free of charge, here at AskARoofer.com. With a strong background in residential roofing and provides a practical and simple answers to hundreds of roof related questions, so it is easy to understand the issues you may have with your roof. Our answers are free so feel free to ask what you want. Use the green question box to contact myself or AskAroofer.com I have spent ten years as a union shingler, seventeen years as a California licensed roofing contractor with a general contractor endorsement and since Feb. of 2005 a roofing consultant. If I don't know the answer to your question, I will point you in the right direction.

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  1. Anonymous
    June 11, 18:50 Reply
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