Executive Vice President, Merchandising at Home Depot
Thank you, Ted, and good morning, everyone. I want to start by also thanking all of our associates and supplier partners for their ongoing commitment to serving our customers and communities. As you heard from Ted, during the second quarter, we continued to see strong demand for home improvement projects and strong execution from our teams and supplier partners.
Turning to our comp performance during the second quarter, all of our merchandising apartments posted positive comps. Building materials, plumbing, millwork, paint and hardware were all above the company average. Electrical, decor and storage, kitchen and bath, outdoor garden tools, appliances, indoor garden, lumber and flooring were positive, but below the company average. As you heard from Ted, while our seasonal businesses posted positive comps in the second quarter, they underperformed our expectations for the first half -- first half of the year, driven by categories like grills, fertilizers, chemicals and mowers. Keep in mind that we are up against very tough comparisons versus the last two years, and in these categories, when our customers focus on outdoor living and these are some of our best performing departments.
During the second quarter, our comp average ticket increased 9% and comp transactions decreased 3.1%. The growth in our comp average ticket was driven primarily by inflation across our product categories, as well as demand for new and innovative products. On a three-year basis, both comp average ticket and comp transactions were healthy and positive.
Deflation from core commodity categories negatively impacted our average ticket growth by 14 basis points during the second quarter, driven primarily by lower lumber prices. Big ticket comp transactions or those over $1,000 were up 11.6% compared to the second quarter of last year. We saw a big ticket strength across many Pro-heavy categories like pipe and fittings, gypsum and fasteners.
During the second quarter, both Pro and DIY sales growth was positive, with Pro outpacing DIY. We're encouraged by the continued momentum we are seeing with our Pros and they tell us their backlogs remain healthy. During the quarter, we saw a robust project demand across the business. This can be seen in the double-digit comp performance of our building materials, plumbing and millwork departments as well as in certain project-related categories like fencing, siding, conduit boxes and fittings, tubs and showers and countertops.
We continue to introduce new and innovative products aimed at simplifying the project, saving our Pros time and helping them take on more jobs. One example in building materials, where we launched nationally Henry's Tropi-Cool Roof Coatings. This new formula offers maximum reflectivity, helping reduce cooling costs. Henry's Tropi-Cool can be applied in any season with 100% waterproof and rain-safe within 15 minutes of application. And this product is exclusive to the Home Depot in the big box channel.
In bath, we're excited about the success we're having with our great assortment of Delta Tub & Shower wall combinations. Delta Classic 500 series is a simple tub or shower system that delivers a big transformation to a bathroom in a fraction of the time. It is easy to install and its acrylic surface makes it easy to clean. This series is exclusive to The Home Depot in the big box channel.
Turning to our online sales, we are very pleased with the performance of our digital assets as we delivered the highest sales dollar volume in company history. Sales leveraging our digital platforms increased 12% during the second quarter. This was driven by our continued investments, which are resonating with our customers, enhanced search capabilities and improved Pro site experience and more robust fulfillment capabilities help drive online conversion. For those customers that chose to transact with us online during the second quarter, more than 50% of our online orders were fulfilled through our stores, a testament to the power of our interconnected retail strategy.
As we look forward to the back half of the year, we remain committed to being our customers' advocate for value. Last quarter, we highlighted several new innovative products for our customers. This quarter, we're excited to announce the launch of Makita's new XGT 40-volt and 80-volt Max system of cordless equipment and tools in our outdoor power categories. The XGT system is engineered to achieve the optimum power required for heavier load applications without sacrificing run time. And these one-battery solution tools are exclusive to The Home Depot and the big box channel. We're also excited to build on the success of our Hubspace Smart Home platform, expanding our assortment across several categories such as door locks, lighting control, fixtures and ceiling fans. Hubspace makes it easier to set up and manage your smart home products and pairs well with voice-controlled operating systems. This platform is exclusive to The Home Depot.
And in garage organization, we'll be rolling out our Milwaukee PACKOUT and RYOBI LINK wall systems, utilizing the same locking technology across the system that can be customized to meet your organizational needs from the workshop to the workplace. We're also excited about our lineup for Halloween. Our merchants have worked with our supplier partners to put together an expanded assortment of product offerings for this Halloween season. These products bring excitement to our stores and help drive traffic and our sneak preview of our Halloween lineup was a tremendous success. We are thrilled for the full rollout in the upcoming weeks.
With that, I'll turn the call over to Richard.