Skip to content

Windstorm Engineering

Most new construction, roof replacements, major repairs, and other alterations require an inspection and certificate of compliance. During the inspection process, we will verify that all construction is in compliance with TDI product evaluations, manufacturers approved installation and/or engineered construction drawings

Let's Talk
See our proven process for Residential Windstorm Certification services

Our Windstorm Engineering Services

As of June 1, 2020, all new and ongoing construction, roof replacements, major repairs, and other alterations must be inspected by an engineer appointed by TDI (Texas Department of Insurance) for a TDI WPI-8.  Any completed construction project can be inspected a State of Texas registered engineer to receive a TDI WPI-8.

As of September 1,2020, all new construction must meet the minimum requirements of IBC or IRC 18 to receive a TDI WPI-8.

TDI WPI-8 Certificate Search
Schedule an Inspection

Who's Affected

TDI has designated the 14 coastal counties and some areas of Harris County to be in the catastrophe area.  Homeowners in these areas may not be able to obtain private insurance that covers windstorm and hail damage and must get coverage through TWIA.

In order to purchase a TWIA policy, most homes and properties must have a certificate of compliance verifying that the structure meets applicable building codes and can withstand high winds and hail.

For alterations like a re-roof (non-shingle), re-sides, new windows, new doors, new skylights etc., we will inspect that these products are installed in accordance with TDI product evaluations.


For new construction and additions, windstorm/structural engineering and design must be completed for all projects within the designated catastrophe area. Lynn Engineering will engineer your project to meet the design requirements of the code. This must include a Windstorm Compliant Plan and Foundation Plan.

New Construction Inspection Process

  • Foundation – We inspect all aspects of the foundation system. This includes, but is not limited to, rebar sizes and spacings, concrete beam depth, beam location, vapor barrier, pier depth, timber piling depth, timber stringer/beam sizes and all bolted connections.
    • Foundations must be poured, and piles set in accordance with an engineered stamped foundation plan.
  • Framing – We inspect all framing members used to resist the gravity, lateral and uplift loads experienced by the structure. This includes but is no limited to, floor joist, ceiling joists, rafters, studs, headers, wall sheathing, roof decking and beams.
  • Clips, Straps, Hold-downs – We inspect all clips, straps and hold-downs are installed in accordance with manufacturer’s installation requirements and are consistent with our Windstorm Compliant Plan.
  • Components and Cladding – We inspect the installation of all windows, doors, siding, roofing and any other products that will be attached to the structure and verify installation is consistent with TDI product evaluations.
  • Exterior Mechanical Equipment – We inspect that all A/C condensing units, generators and any other mechanical equipment that may be connected to the structure are anchored to with stand 100 lbs. of uplift.
  • Wind Borne Debris Protection – We verify that all glazed openings are protected from wind borne debris.
TDI WPI-8 Certificate Search
Schedule an Inspection

Questions?

We Know the Landscape of the
Texas Gulf Coast & Local Communities
—We Can Help.

Let's Talk

The Windstorm Team

StuartLynn_2022

Stuart A. Lynn, P.E.

Founder/CEO, Visionary

Stuart Lynn is a Registered Professional Engineer in Texas and Founder at Lynn...

Read Bio
MitchellCarrillo

N. Mitchell Carrillo, P.E.

Principal Engineer, Integrator

Professional Engineer at Lynn Engineering. He manages the operations’ function...

Read Bio
DiegoAndrade

Diego Andrade

Engineer In Training

Diego Andrade is an engineer in training at Lynn Engineering with his primary emphasis being on...

Read Bio
Meet the Rest of Team